{"id":11984,"date":"2025-08-12T16:11:19","date_gmt":"2025-08-12T15:11:19","guid":{"rendered":"https:\/\/mcqsadda.com\/?p=11984"},"modified":"2025-11-18T06:42:33","modified_gmt":"2025-11-18T06:42:33","slug":"unit-and-measurement-100-mcqs-with-answer-and-explanation","status":"publish","type":"post","link":"https:\/\/mcqsadda.com\/index.php\/2025\/08\/12\/unit-and-measurement-100-mcqs-with-answer-and-explanation\/","title":{"rendered":"Unit and Measurement 100 MCQs With Answer and Explanation"},"content":{"rendered":"\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">1. The process of assigning numbers to physical quantities is called:<\/mark><\/strong><br>A) Measuring<br>B) Counting<br>C) Estimating<br>D) Calculating<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Measurement is the process of comparing a quantity with a standard unit.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">2. The internationally accepted system of units is:<\/mark><\/strong><br>A) FPS system<br>B) CGS system<br>C) SI system<br>D) MKS system<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> The International System of Units (SI) is the standard worldwide.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">3. The SI base unit of length is<\/mark><\/strong>:<br>A) Foot<br>B) Centimeter<br>C) Meter<br>D) Kilometer<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b>  In SI, length is measured in meters (m).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">4. Which of the following is NOT a fundamental quantity?<\/mark><\/strong><br>A) Mass<br>B) Time<br>C) Velocity<br>D) Length<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Velocity is derived from length and time; it\u2019s not a base quantity.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">5. The SI unit of mass is:<\/mark><\/strong><br>A) Gram<br>B) Kilogram<br>C) Quintal<br>D) Pound<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B<\/b><BR>\n<b>Explanation:<\/b> The kilogram (kg) is the SI base unit for mass.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">6. The SI unit of electric current is:<\/mark><\/strong><br>A) Volt<br>B) Coulomb<br>C) Ampere<br>D) Ohm<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C<\/b><BR>\n<b>Explanation:<\/b> Ampere (A) measures electric current.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">7. The SI unit of temperature is:<\/mark><\/strong><br>A) Celsius<br>B) Kelvin<br>C) Fahrenheit<br>D) Joule<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Kelvin (K) is the SI base unit for temperature.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">8. The SI unit of luminous intensity is:<\/mark><\/strong><br>A) Lux<br>B) Candela<br>C) Watt<br>D) Lumen<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Luminous intensity is measured in candela (cd).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">9. The SI unit of amount of substance is:<\/mark><\/strong><br>A) Mole<br>B) Gram mole<br>C) Kilomole<br>D) Molecule<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A<\/b><BR>\n<b>Explanation:<\/b>The mole is the SI base unit for amount of substance.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">10. Which of the following is a derived quantity?<\/mark><\/strong><br>A) Length<br>B) Time<br>C) Force<br>D) Mass<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C<\/b><BR>\n<b>Explanation:<\/b>Force is derived: F=m \u00d7 a\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">11. The SI unit of force is:<\/mark><\/strong><br>A) Dyne<br>B) Newton<br>C) Joule<br>D) Pascal<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B<\/b><BR>\n<b>Explanation:<\/b>Newton (N) is the SI unit of force.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">12. The SI unit of energy is:<\/mark><\/strong><br>A) Newton<br>B) Joule<br>C) Watt<br>D) Calorie<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B<\/b><BR>\n<b>Explanation:<\/b> Energy is measured in Joules (J).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">13. The SI unit of pressure is:<\/mark><\/strong><br>A) Pascal<br>B) Newton<br>C) Bar<br>D) Torr<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Pressure = Force\/Area, measured in Pascals (Pa).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">14. Which unit is NOT used in the SI system?<\/mark><\/strong><br>A) Meter<br>B) Kilogram<br>C) Second<br>D) Foot<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> Foot is used in the FPS system, not in SI.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">15. The dimensional formula of velocity is:<\/mark><\/strong><br>A) [M\u00b9L\u00b9T\u207b\u00b2]<br>B) [M\u2070L\u00b9T\u207b\u00b9]<br>C) [M\u00b9L\u2070T\u207b\u00b9]<br>D) [M\u2070L\u00b9T\u207b\u00b2]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B<\/b><BR>\n<b>Explanation:<\/b>  Velocity = displacement\/time \u2192 L\u00b9T\u207b\u00b9.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">16. Which of these is NOT a base unit in SI?<\/mark><\/strong><br>A) Second<br>B) Candela<br>C) Joule<br>D) Meter<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C<\/b><BR>\n<b>Explanation:<\/b> Joule is a derived unit for energy.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">17. In physics, a unit is defined as:<\/mark><\/strong><br>A) A standard measure of quantity<br>B) A large number<br>C) A mathematical constant<br>D) None of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A<\/b><BR>\n<b>Explanation:<\/b> A unit is a defined magnitude of a physical quantity.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">18. The SI unit of frequency is:<\/mark><\/strong><br>A) Hertz<br>B) Joule<br>C) Watt<br>D) Decibel<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A<\/b><BR>\n<b>Explanation:<\/b> Hertz (Hz) = cycles per second.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">19. The SI unit of power is:<\/mark><\/strong><br>A) Watt<br>B) Volt<br>C) Joule<br>D) Newton<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A<\/b><BR>\n<b>Explanation:<\/b>  Power = Energy \/ Time \u2192 Watt.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">20. The SI unit of work is:<\/mark><\/strong><br>A) Joule<br>B) Newton<br>C) Watt<br>D) Erg<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A<\/b><BR>\n<b>Explanation:<\/b>  Work = Force \u00d7 Distance, measured in Joules.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">21. The dimensional formula of acceleration is:<\/mark><\/strong><br>A) [M\u2070L\u00b9T\u207b\u00b2]<br>B) [M\u2070L\u00b9T\u207b\u00b9]<br>C) [M\u00b9L\u00b9T\u207b\u00b2]<br>D) [M\u2070L\u2070T\u207b\u00b2]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A<\/b><BR>\n<b>Explanation:<\/b> Acceleration = Velocity\/Time \u2192 L\u00b9T\u207b\u00b2.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">22. The dimensional formula of force is:<\/mark><\/strong><br>A) [M\u00b9L\u00b9T\u207b\u00b2]<br>B) [M\u2070L\u00b9T\u207b\u00b2]<br>C) [M\u00b9L\u2070T\u207b\u00b2]<br>D) [M\u00b9L\u00b2T\u207b\u00b2]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A<\/b><BR>\n<b>Explanation:<\/b> Force = mass \u00d7 acceleration \u2192 M\u00b9L\u00b9T\u207b\u00b2.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">23. The dimensional formula of energy is:<\/mark><\/strong><br>A) [M\u00b9L\u00b9T\u207b\u00b2]<br>B) [M\u00b9L\u00b2T\u207b\u00b2]<br>C) [M\u2070L\u00b2T\u207b\u00b2]<br>D) [M\u00b9L\u00b2T\u2070]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B<\/b><BR>\n<b>Explanation:<\/b>Energy = Force \u00d7 Distance \u2192 M\u00b9L\u00b2T\u207b\u00b2.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">24. Which one of these is dimensionless?<\/mark><\/strong><br>A) Strain<br>B) Velocity<br>C) Energy<br>D) Momentum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A<\/b><BR>\n<b>Explanation:<\/b>Strain = change in length \/ original length \u2192 no units.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">25. The dimensional formula of pressure is:<\/mark><\/strong><br>A) [M\u00b9L\u207b\u00b9T\u207b\u00b2]<br>B) [M\u00b9L\u00b9T\u207b\u00b2]<br>C) [M\u2070L\u207b\u00b9T\u207b\u00b2]<br>D) [M\u00b9L\u00b2T\u207b\u00b2]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A<\/b><BR>\n<b>Explanation:<\/b> Pressure = Force \/ Area \u2192 M\u00b9L\u207b\u00b9T\u207b\u00b2.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">26. The dimensional formula of gravitational constant (G) is:<\/mark><\/strong><br>A) [M\u207b\u00b9L\u00b3T\u207b\u00b2]<br>B) [M\u00b9L\u00b3T\u207b\u00b2]<br>C) [M\u207b\u00b9L\u00b2T\u207b\u00b2]<br>D) [M\u2070L\u00b3T\u207b\u00b2]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A<\/b><BR>\n<b>Explanation:<\/b>From F=GMmr2F = \\frac{GMm}{r^2}F=r2GMm\u200b, G \u2192 M\u207b\u00b9L\u00b3T\u207b\u00b2.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">27. The dimensional formula of momentum is:<\/mark><\/strong><br>A) [M\u00b9L\u00b9T\u207b\u00b9]<br>B) [M\u00b9L\u00b9T\u207b\u00b2]<br>C) [M\u2070L\u00b9T\u207b\u00b9]<br>D) [M\u00b9L\u00b2T\u207b\u00b2]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A<\/b><BR>\n<b>Explanation:<\/b>Momentum = mass \u00d7 velocity \u2192 M\u00b9L\u00b9T\u207b\u00b9.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">28. Which of the following pairs have the same dimensions?<\/mark><\/strong><br>A) Work and Torque<br>B) Power and Energy<br>C) Force and Energy<br>D) Pressure and Energy<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A<\/b><BR>\n<b>Explanation:<\/b> Both work and torque have M\u00b9L\u00b2T\u207b\u00b2.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">29. The dimensional formula of Planck\u2019s constant (h) is:<\/mark><\/strong><br>A) [M\u00b9L\u00b2T\u207b\u00b9]<br>B) [M\u00b9L\u00b2T\u207b\u00b2]<br>C) [M\u2070L\u00b2T\u207b\u00b2]<br>D) [M\u00b9L\u00b2T\u2070]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A<\/b><BR>\n<b>Explanation:<\/b>From E = h\u03bd, h \u2192 M\u00b9L\u00b2T\u207b\u00b9.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">30. Which one of the following is NOT dimensionless?<\/mark><\/strong><br>A) Refractive index<br>B) Poisson\u2019s ratio<br>C) Angular displacement (in radians)<br>D) Electric charge<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b>Charge has dimensions in SI: A\u00b7T.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">31. The dimensional formula of velocity is:<\/mark><\/strong><br>A) [M\u2070L\u00b9T\u207b\u00b9]<br>B) [M\u00b9L\u00b9T\u207b\u00b2]<br>C) [M\u2070L\u00b9T\u2070]<br>D) [M\u2070L\u00b9T\u207b\u00b2]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b>Velocity = displacement\/time.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">32. Which has the same dimensions as impulse?<\/mark><\/strong><br>A) Force<br>B) Momentum<br>C) Power<br>D) Energy<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B<\/b><BR>\n<b>Explanation:<\/b>Impulse = Force \u00d7 Time = change in momentum.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">33. Which of the following is a correct equation dimensionally?<\/mark><\/strong><br>A) v = u + at<br>B) v\u00b2 = u\u00b2 + 2as<br>C) s = ut + \u00bdat\u00b2<br>D) All of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D<\/b><BR>\n<b>Explanation:<\/b> All are dimensionally consistent.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">34. The dimensional formula of universal gas constant (R) is:<\/mark><\/strong><br>A) [M\u00b9L\u00b2T\u207b\u00b2K\u207b\u00b9mol\u207b\u00b9]<br>B) [M\u00b9L\u00b2T\u207b\u00b2]<br>C) [M\u00b9L\u00b2T\u207b\u00b2mol\u207b\u00b9]<br>D) [M\u00b9L\u00b2T\u207b\u00b2K\u207b\u00b9]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A<\/b><BR>\n<b>Explanation:<\/b>From PV = nRT.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">35. Which of the following has dimensions of energy?<\/mark><\/strong><br>A) Torque<br>B) Work<br>C) Potential energy<br>D) All of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b>All have M\u00b9L\u00b2T\u207b\u00b2.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">36. Which is NOT a use of dimensional analysis?<\/mark><\/strong><br>A) Checking correctness of equations<br>B) Finding units of quantities<br>C) Determining exact numerical constants<br>D) Converting units<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> It cannot give numerical constants.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">37. The dimensional formula of surface tension is:<\/mark><\/strong><br>A) [M\u00b9L\u2070T\u207b\u00b2]<br>B) [M\u00b9L\u207b\u00b9T\u207b\u00b2]<br>C) [M\u00b9L\u00b9T\u207b\u00b2]<br>D) [M\u2070L\u207b\u00b9T\u207b\u00b2]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b>Surface tension = Force \/ length.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">38. The dimensional formula of angular momentum is:<\/mark><\/strong><br>A) [M\u00b9L\u00b2T\u207b\u00b9]<br>B) [M\u00b9L\u00b2T\u207b\u00b2]<br>C) [M\u00b9L\u00b9T\u207b\u00b9]<br>D) [M\u2070L\u00b2T\u207b\u00b9]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Angular momentum = moment of inertia \u00d7 angular velocity.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">39. The dimensions of Planck\u2019s constant divided by speed of light are:<\/mark><\/strong><br>A) [M\u00b9L\u00b9T\u207b\u00b9]<br>B) [M\u00b9L\u00b9T\u2070]<br>C) [M\u00b9L\u2070T\u207b\u00b9]<br>D) [M\u2070L\u00b9T\u207b\u00b9]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> h\/c \u2192 (M\u00b9L\u00b2T\u207b\u00b9)\/(L\u00b9T\u207b\u00b9) = M\u00b9L\u00b9T\u2070.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">40. Dimensional analysis fails in case of:<\/mark><\/strong><br>A) Addition of quantities<br>B) Trigonometric functions<br>C) Logarithmic functions<br>D) All of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b>It doesn\u2019t work with dimensionless arguments inside such functions.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">41. The SI unit of electric current is:<\/mark><\/strong><br>A) Coulomb<br>B) Volt<br>C) Ampere<br>D) Ohm<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b>Ampere (A) is the SI base unit for electric current, defined using the charge flow per second.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>42. Which of these is not a base quantity in the SI system?<\/strong><\/mark><br>A) Length<br>B) Time<br>C) Mass<br>D) Velocity<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> Velocity is a derived quantity (length\/time), not a base quantity.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">43. The dimension of pressure is:<\/mark><\/strong><br>A) [MLT\u207b\u00b2]<br>B) [ML\u207b\u00b9T\u207b\u00b2]<br>C) [ML\u00b2T\u207b\u00b2]<br>D) [M\u2070L\u2070T\u2070]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b>Pressure = Force\/Area = [MLT\u207b\u00b2]\/[L\u00b2] = [ML\u207b\u00b9T\u207b\u00b2].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">44. Which method is used to check the dimensional correctness of an equation?<\/mark><\/strong><br>A) Dimensional analysis<br>B) Unit conversion<br>C) Significant figures<br>D) None of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Dimensional analysis verifies the homogeneity of dimensions in an equation.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">45. The SI unit of luminous intensity is:<\/mark><\/strong><br>A) Lux<br>B) Candela<br>C) Lumen<br>D) Watt<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Candela (cd) is the SI base unit for luminous intensity.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">46. One light year is a unit of:<\/mark><\/strong><br>A) Time<br>B) Distance<br>C) Speed<br>D) Energy<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b>A light year is the distance light travels in one year (~9.46 \u00d7 10\u00b9\u00b2 km).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">47. Which of the following pairs is correct?<\/mark><\/strong><br>A) Frequency \u2013 Hertz<br>B) Force \u2013 Joule<br>C) Energy \u2013 Watt<br>D) Pressure \u2013 Newton<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Hertz (Hz) is the SI unit for frequency, meaning cycles per second.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">48. The SI unit of angular velocity is:<\/mark><\/strong><br>A) rad\/s<br>B) rad\/s\u00b2<br>C) Hz<br>D) m\/s<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Angular velocity is measured in radians per second.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">49. The number of base units in the SI system is:<\/mark><\/strong><br>A) 5<br>B) 7<br>C) 9<br>D) 6<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b>There are 7 base units in SI: m, kg, s, A, K, mol, cd.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">50. The dimension of energy is:<\/mark><\/strong><br>A) [MLT\u207b\u00b2]<br>B) [ML\u00b2T\u207b\u00b2]<br>C) [ML\u00b2T\u207b\u00b3]<br>D) [M\u2070L\u2070T\u2070]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b>Energy = Force \u00d7 distance = [MLT\u207b\u00b2] \u00d7 [L] = [ML\u00b2T\u207b\u00b2].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">51. The SI unit of work is:<\/mark><\/strong><br>A) Watt<br>B) Newton<br>C) Joule<br>D) Pascal<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Work = Force \u00d7 distance \u2192 [ML\u00b2T\u207b\u00b2] \u2192 Joule.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">52. The dimension of power is:<\/mark><\/strong><br>A) [ML\u00b2T\u207b\u00b3]<br>B) [MLT\u207b\u00b2]<br>C) [ML\u00b2T\u207b\u00b2]<br>D) [M\u2070L\u2070T\u2070]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b>Power = Work\/Time = [ML\u00b2T\u207b\u00b2]\/[T] = [ML\u00b2T\u207b\u00b3].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">53. The SI unit of surface tension is:<\/mark><\/strong><br>A) N\/m\u00b2<br>B) N\/m<br>C) Pa<br>D) m\u00b2\/N<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b>Surface tension = Force\/length = [MLT\u207b\u00b2]\/[L] = N\/m.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">54. Which of the following is a dimensionless quantity?<\/mark><\/strong><br>A) Strain<br>B) Stress<br>C) Pressure<br>D) Velocity<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b>Strain = change in length\/original length \u2192 ratio \u2192 dimensionless.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">55. The SI unit of gravitational constant (G) is:<\/mark><\/strong><br>A) m\u00b3kg\u207b\u00b9s\u207b\u00b2<br>B) m\u00b2kg\u207b\u00b2s\u207b\u00b2<br>C) m\u00b3kg\u207b\u00b2s\u207b\u00b9<br>D) m\u00b2kg\u207b\u00b9s\u207b\u00b2<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> From F = G m\u2081 m\u2082 \/ r\u00b2, G = Fr\u00b2 \/ (m\u2081m\u2082) \u2192 m\u00b3kg\u207b\u00b9s\u207b\u00b2.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">56. Which physical quantity has dimensions [ML\u207b\u00b9T\u207b\u00b2]?<\/mark><\/strong><br>A) Pressure<br>B) Energy<br>C) Velocity<br>D) Power<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Pressure = Force\/Area = [MLT\u207b\u00b2]\/[L\u00b2] = [ML\u207b\u00b9T\u207b\u00b2].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">57. The SI unit of electric charge is:<\/mark><\/strong><br>A) Volt<br>B) Coulomb<br>C) Ohm<br>D) Ampere<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b>1 Coulomb = charge carried by a current of 1 A in 1 s.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">58. Which of these is NOT a derived unit?<\/mark><\/strong><br>A) Joule<br>B) Meter<br>C) Watt<br>D) Pascal<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b>Meter is a base unit, others are derived.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>59. The dimension of universal gas constant R is:<\/strong><\/mark><br>A) [ML\u00b2T\u207b\u00b2K\u207b\u00b9mol\u207b\u00b9]<br>B) [MLT\u207b\u00b2K\u207b\u00b9mol\u207b\u00b9]<br>C) [M\u2070L\u2070T\u2070K\u207b\u00b9mol\u207b\u00b9]<br>D) [ML\u00b2T\u207b\u00b3K\u207b\u00b9mol\u207b\u00b9]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer:A <\/b><BR>\n<b>Explanation:<\/b> From PV = nRT, R = PV\/nT = (Nm\u00b2\/mol\u00b7K) \u2192 [ML\u00b2T\u207b\u00b2K\u207b\u00b9mol\u207b\u00b9].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">60. The SI unit of luminous flux is:<\/mark><\/strong><br>A) Lumen<br>B) Lux<br>C) Candela<br>D) Watt<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer:A <\/b><BR>\n<b>Explanation:<\/b> Lumen measures luminous flux, total light emitted per second.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">61. 1 angstrom (\u00c5) equals:<\/mark><\/strong><br>A) 10\u207b\u2078 m<br>B) 10\u207b\u00b9\u2070 m<br>C) 10\u207b\u2079 m<br>D) 10\u207b\u00b9\u00b2 m<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer:B <\/b><BR>\n<b>Explanation:<\/b>1 \u00c5 = 10\u207b\u00b9\u2070 meters.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">62. The dimension of Planck\u2019s constant (h) is:<\/mark><\/strong><br>A) [ML\u00b2T\u207b\u00b9]<br>B) [ML\u00b2T\u207b\u00b2]<br>C) [ML\u00b2T\u207b\u00b3]<br>D) [MLT\u207b\u00b9]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer:A <\/b><BR>\n<b>Explanation:<\/b>From E = h\u03bd, h = E\/\u03bd = [ML\u00b2T\u207b\u00b2]\/[T\u207b\u00b9] = [ML\u00b2T\u207b\u00b9].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">63. Which is the correct SI unit for frequency?<\/mark><\/strong><br>A) rad\/s<br>B) cycles\/s<br>C) Hz<br>D) All of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer:D <\/b><BR>\n<b>Explanation:<\/b>All are equivalent; 1 Hz = 1 cycle per second = 2\u03c0 rad\/s (for one full cycle).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">64. Which has no physical dimension?<\/mark><\/strong><br>A) Refractive index<br>B) Energy<br>C) Momentum<br>D) Force<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer:A <\/b><BR>\n<b>Explanation:<\/b> Refractive index = speed of light in vacuum \/ speed in medium \u2192 ratio.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">65. The SI unit of momentum is:<\/mark><\/strong><br>A) kg\u00b7m\/s<br>B) N\u00b7s<br>C) Both A and B<br>D) Joule<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer:C <\/b><BR>\n<b>Explanation:<\/b> Momentum = mass \u00d7 velocity; N\u00b7s is equivalent to kg\u00b7m\/s.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">66. Which of these is NOT an SI base unit?<\/mark><\/strong><br>A) Kelvin<br>B) Mole<br>C) Litre<br>D) Candela<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer:C <\/b><BR>\n<b>Explanation:<\/b> Litre is not an SI base unit; cubic meter is used in SI.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">67. The dimensional formula of velocity is:<\/mark><\/strong><br>A) [MLT\u207b\u00b2]<br>B) [MLT\u207b\u00b9]<br>C) [M\u2070LT\u207b\u00b9]<br>D) [ML\u00b2T\u207b\u00b2]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer:C <\/b><BR>\n<b>Explanation:<\/b> Velocity = displacement\/time = [L]\/[T] = [M\u2070LT\u207b\u00b9].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">68. 1 micron equals:<\/mark><\/strong><br>A) 10\u207b\u2074 m<br>B) 10\u207b\u2076 m<br>C) 10\u207b\u2078 m<br>D) 10\u207b\u2079 m<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer:B <\/b><BR>\n<b>Explanation:<\/b>Micron (\u00b5m) = 10\u207b\u2076 meters.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">69. The SI unit of pressure is:<\/mark><\/strong><br>A) Pa<br>B) N\/m\u00b2<br>C) kg\u00b7m\u207b\u00b9\u00b7s\u207b\u00b2<br>D) All of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer:D <\/b><BR>\n<b>Explanation:<\/b>Pascal (Pa) = N\/m\u00b2 = kg\u00b7m\u207b\u00b9\u00b7s\u207b\u00b2. \n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">70. Which is a vector quantity?<\/mark><\/strong><br>A) Speed<br>B) Work<br>C) Power<br>D) Velocity<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer:D <\/b><BR>\n<b>Explanation:<\/b>Velocity has both magnitude and direction.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">71. The SI unit of magnetic flux is:<\/mark><\/strong><br>A) Weber<br>B) Tesla<br>C) Henry<br>D) Ohm<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer:A<\/b><BR>\n<b>Explanation:<\/b>Weber (Wb) measures magnetic flux.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">72. The dimension of force constant (spring constant) is:<\/mark><\/strong><br>A) [MT\u207b\u00b2]<br>B) [MLT\u207b\u00b2]<br>C) [MT\u207b\u00b9]<br>D) [ML\u207b\u00b9T\u207b\u00b2]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer:A<\/b><BR>\n<b>Explanation:<\/b>The dimension of the force constant (spring constant),\n\nkk\ud835\udc58, is [MT\u207b\u00b2].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>73. Which unit is used for measuring astronomical distances?<\/strong><\/mark><br>A) Light year<br>B) Parsec<br>C) Astronomical unit<br>D) All of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> All are used for large distances in space.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">74. The SI unit of capacitance is:<\/mark><\/strong><br>A) Farad<br>B) Ohm<br>C) Coulomb<br>D) Henry<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> 1 Farad = 1 Coulomb per volt.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">75. The dimensional formula of torque is:<\/mark><\/strong><br>A) [ML\u00b2T\u207b\u00b2]<br>B) [MLT\u207b\u00b2]<br>C) [ML\u00b2T\u207b\u00b3]<br>D) [M\u00b2L\u00b2T\u207b\u00b2]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b>Torque = Force \u00d7 distance = [MLT\u207b\u00b2] \u00d7 [L] = [ML\u00b2T\u207b\u00b2].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">76. Which physical quantity has unit Tesla?<\/mark><\/strong><br>A) Magnetic flux<br>B) Magnetic field<br>C) Magnetic moment<br>D) Current density<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b>Tesla (T) = Weber per square meter = magnetic flux density.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">77. The SI unit of resistivity is:<\/mark><\/strong><br>A) Ohm\u00b7m<br>B) Ohm\/m<br>C) Ohm\/m\u00b2<br>D) Ohm\u207b\u00b9\u00b7m<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Resistivity = (Resistance \u00d7 Area) \/ length \u2192 \u03a9\u00b7m.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">78. The dimensional formula of electric potential difference is:<\/mark><\/strong><br>A) [ML\u00b2T\u207b\u00b3A\u207b\u00b9]<br>B) [ML\u00b2T\u207b\u00b2A\u207b\u00b9]<br>C) [MLT\u207b\u00b3A\u207b\u00b9]<br>D) [ML\u00b2T\u207b\u00b9A\u207b\u00b9]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Potential = Work\/Charge = [ML\u00b2T\u207b\u00b2]\/[AT] = [ML\u00b2T\u207b\u00b3A\u207b\u00b9].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">79. Which unit is used for luminous intensity?<\/mark><\/strong><br>A) Lumen<br>B) Lux<br>C) Candela<br>D) Watt<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b>  Candela is the SI base unit of luminous intensity.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">80. 1 femtometer equals:<\/mark><\/strong><br>A) 10\u207b\u00b9\u00b2 m<br>B) 10\u207b\u00b9\u2075 m<br>C) 10\u207b\u2079 m<br>D) 10\u207b\u00b9\u2070 m<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Femtometer = 10\u207b\u00b9\u2075 meters.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">81. The SI unit of inductance is:<\/mark><\/strong><br>A) Henry<br>B) Weber<br>C) Ohm<br>D) Tesla<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Henry (H) = Weber per ampere.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">82. The dimensional formula of impulse is:<\/mark><\/strong><br>A) [ML\u00b2T\u207b\u00b2]<br>B) [MLT\u207b\u00b2]<br>C) [MLT\u207b\u00b9]<br>D) [MLT\u207b\u00b9]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Impulse = Force \u00d7 time = [MLT\u207b\u00b2] \u00d7 [T] = [MLT\u207b\u00b9].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">83. Which is a fundamental physical constant?<\/mark><\/strong><br>A) G<br>B) h<br>C) c<br>D) All of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b>  Gravitational constant, Planck\u2019s constant, and speed of light are universal constants.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">84. The SI unit of entropy is:<\/mark><\/strong><br>A) J\/K<br>B) J\/mol<br>C) J\/mol\u00b7K<br>D) W\/K<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b>  Entropy measures disorder; SI unit is Joule per Kelvin.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">85. The dimensional formula of density is:<\/mark><\/strong><br>A) [ML\u207b\u00b3]<br>B) [MLT\u207b\u00b2]<br>C) [M\u2070LT\u207b\u00b3]<br>D) [ML\u00b2T\u207b\u00b2]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Density = mass\/volume \u2192 [M]\/[L\u00b3] = [ML\u207b\u00b3].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">86. Which unit measures frequency of a wave?<\/mark><\/strong><br>A) Watt<br>B) Hertz<br>C) Joule<br>D) Pascal<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Hertz = cycles per second.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">87. The SI unit of angular acceleration is:<\/mark><\/strong><br>A) rad\/s\u00b2<br>B) rad\/s<br>C) m\/s\u00b2<br>D) m\/s<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b>Angular acceleration = rate of change of angular velocity.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">88. Which is a scalar quantity?<\/mark><\/strong><br>A) Velocity<br>B) Acceleration<br>C) Force<br>D) Speed<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> Speed has only magnitude.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">89. The dimensional formula of modulus of elasticity is same as:<\/mark><\/strong><br>A) Energy<br>B) Pressure<br>C) Force<br>D) Work<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Elastic modulus = Stress\/Strain \u2192 same as pressure [ML\u207b\u00b9T\u207b\u00b2].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">90. Which of these is NOT an SI derived unit?<\/mark><\/strong><br>A) Pascal<br>B) Joule<br>C) Watt<br>D) Degree Celsius<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b>Celsius is a temperature scale, not a derived SI unit.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">91. The SI unit of heat is:<\/mark><\/strong><br>A) Joule<br>B) Calorie<br>C) Watt<br>D) Kelvin<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b>Joule is the SI unit for all forms of energy, including heat.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">92. 1 electronvolt (eV) equals:<\/mark><\/strong><br>A) 1.6 \u00d7 10\u207b\u00b9\u2079 J<br>B) 3.0 \u00d7 10\u2078 J<br>C) 9.1 \u00d7 10\u207b\u00b3\u00b9 J<br>D) 1.6 \u00d7 10\u00b9\u2079 J<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> eV is the energy gained by one electron moving through a potential difference of 1 volt.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">93. The SI unit of specific heat capacity is:<\/mark><\/strong><br>A) J\/kg\u00b7K<br>B) J\/mol\u00b7K<br>C) J\/K<br>D) Calorie<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b>Specific heat capacity = heat per unit mass per Kelvin.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">94. Which quantity has dimension [ML\u00b2T\u207b\u00b2]?<\/mark><\/strong><br>A) Energy<br>B) Power<br>C) Momentum<br>D) Pressure<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Energy\/work has dimension [ML\u00b2T\u207b\u00b2].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">95. The SI unit of kinematic viscosity is:<\/mark><\/strong><br>A) m\u00b2\/s<br>B) m\/s\u00b2<br>C) m\/s<br>D) m\u00b3\/s<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Kinematic viscosity = dynamic viscosity\/density \u2192 [L\u00b2\/T].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">96. The SI unit of permeability is:<\/mark><\/strong><br>A) H\/m<br>B) Wb\/m<br>C) T\u00b7m\/A<br>D) \u03a9\u00b7m<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Permeability (\u03bc) is measured in Henry per meter.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">97. Which physical quantity has unit Newton-second?<\/mark><\/strong><br>A) Impulse<br>B) Momentum<br>C) Both A and B<br>D) Power<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C<\/b><BR>\n<b>Explanation:<\/b>  Impulse and momentum have the same unit.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">98. The dimensional formula of acceleration is:<\/mark><\/strong><br>A) [MLT\u207b\u00b2]<br>B) [M\u2070LT\u207b\u00b2]<br>C) [ML\u00b2T\u207b\u00b3]<br>D) [M\u2070LT\u207b\u00b9]<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b>Acceleration = velocity\/time = [L\/T\u00b2] = [M\u2070LT\u207b\u00b2].\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">99. The SI unit of thermal conductivity is:<\/mark><\/strong><br>A) W\/m\u00b7K<br>B) W\/m\u00b2\u00b7K<br>C) W\u00b7K\/m<br>D) W\/K<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b>Thermal conductivity measures heat flow per unit length per temperature difference.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">100. Which is the base unit for thermodynamic temperature?<\/mark><\/strong><br>A) Celsius<br>B) Kelvin<br>C) Fahrenheit<br>D) Rankine<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b>Kelvin is the SI base unit for temperature.\n <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>1. The process of assigning numbers to physical quantities is called:A) MeasuringB) CountingC) EstimatingD) Calculating Show Answer Answer: A Explanation: Measurement is the process of comparing a quantity with a standard unit. 2. The internationally accepted system of units is:A) FPS systemB) CGS systemC) SI systemD) MKS system Show Answer Answer: C Explanation: The International<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,19],"tags":[15458,15481,15462,15455,15466,15460,4029,5649,15465,5623,15459,15473,15457,15471,15461,15479,15474,15482,15467,15483,15472,15456,15477,15478,15470,15475,15468,15469,15476,6983,15463,15454,15464,15480],"class_list":{"0":"post-11984","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-physics","7":"category-science","8":"tag-accuracy-and-precision","9":"tag-competitive-exam-physics","10":"tag-derived-units","11":"tag-dimension-analysis","12":"tag-errors-in-measurement","13":"tag-fundamental-units","14":"tag-mcqs-adda","15":"tag-mcqs-for-pc-psi-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams","16":"tag-mcqs-for-physics-exam","17":"tag-mcqs-for-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams","18":"tag-measurement-in-physics","19":"tag-measurement-techniques","20":"tag-physical-quantities","21":"tag-physics-basics","22":"tag-physics-fundamentals","23":"tag-physics-learning","24":"tag-physics-mcqs","25":"tag-physics-online-quiz","26":"tag-physics-preparation-material","27":"tag-physics-questions-and-answers","28":"tag-physics-quiz","29":"tag-physics-study-material","30":"tag-physics-test-questions","31":"tag-psc-physics-mcqs","32":"tag-scientific-measurement","33":"tag-si-units","34":"tag-significant-figures","35":"tag-ssc-physics-mcqs","36":"tag-standard-units-of-measurement","37":"tag-unit-and-measurement-100-mcqs-with-answer-and-explanation","38":"tag-unit-conversion","39":"tag-units-and-measurement","40":"tag-units-in-mechanics","41":"tag-upsc-physics-mcqs"},"_links":{"self":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/11984","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/comments?post=11984"}],"version-history":[{"count":103,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/11984\/revisions"}],"predecessor-version":[{"id":20492,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/11984\/revisions\/20492"}],"wp:attachment":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/media?parent=11984"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/categories?post=11984"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/tags?post=11984"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}