1.What is surface tension?A) Energy per unit area of a solidB) Force per unit volume of a liquidC) Force per…
Browsing: Physics
1. What is the SI unit of pressure?a) Pascalb) Newtonc) Jouled) WattAnswer: a) PascalExplanation: Pressure is defined as force per…
1. What principle explains the phenomenon of flotation?a) Newton’s First Lawb) Archimedes’ Principlec) Pascal’s Lawd) Bernoulli’s PrincipleAnswer: b) Archimedes’ PrincipleExplanation:…
1.Who proposed the universal law of gravitation?a) Albert Einsteinb) Isaac Newtonc) Galileo Galileid) Johannes KeplerAnswer: b) Isaac NewtonExplanation: Newton formulated…
1. What is the SI unit of work?a) Jouleb) Wattc) Newtond) PascalAnswer: a) JouleExplanation: Work is force times displacement. Its…
1.A light‑year is a measure of:A) SpeedB) DistanceC) TimeD) VelocityAnswer: B) DistanceExplanation: A light‑year is the distance that light travels…
1. What is the SI unit of specific heat capacity?A) J/kg·KB) J/g·°CC) Cal/g·°CD) J/mol·KAnswer: A) J/kg·KExplanation: Specific heat capacity is…
1. What is the nature of sound waves?a) Transverseb) Longitudinalc) Electromagneticd) None of the aboveAnswer: b) LongitudinalExplanation: Sound waves propagate…
1. A car starts from rest and moves with uniform acceleration. After 5 s its velocity is 20 m/s. What…
1. The process of assigning numbers to physical quantities is called:A) MeasuringB) CountingC) EstimatingD) Calculating Show Answer Answer: A Explanation:…