Share Facebook Email Telegram WhatsApp Results #1. Which are not complementary colours? Red and cyan Red and cyan Red and magenta Red and magenta Green and yellow Green and yellow Green and magenta Green and magenta #2. When a light wave is reflected from a mirror, there is a change in its ________. Frequency Frequency Amplitude Amplitude Wavelength Wavelength Velocity Velocity #3. Which colour is the complementary colour of yellow? Blue Blue Green Green Orange Orange Red Red #4. Televisions signals cannot be received beyond a certain distance because________. Signals are weak Signals are weak Antenna is weak Antenna is weak Air absorbs signals Air absorbs signals The surface of the earth is curved The surface of the earth is curved #5. In which year did Ole Roemer measure the speed of light for the first time in history? 1776 1776 1676 1676 1876 1876 1867 1867 #6. The minimum height of mirror , required to see whole stand up image of a man of height 1.50 meter shall be ________. 0.75 metre 0.75 metre 1.00 metre 1.00 metre 1.50 metre 1.50 metre 3.00 metre 3.00 metre #7. Image formed by the actual intersection of reflecting rays ( which we see on the screen ) _____. Virtual Virtual Imaginary Imaginary Probable Probable Real Real #8. Which of the following is used to take 3 - dimensional pictures? Photography Photography Holography Holography Radiography Radiography None of these None of these #9. Which of the following types of the mirror is used to see the traffic behind the car ? Convex mirror Convex mirror Concave mirror Concave mirror Plane mirror Plane mirror Spherical mirror Spherical mirror #10. A spoon which looks bent in water is an example of which of the following ? Reflection Reflection Refraction Refraction Retention Retention Focus Focus Finish
