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Class 7 Science Chapter 11 Light Quiz 21 (25 MCQs)

Quiz Instructions

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1. Image formed in a pinhole camera is always
2. A material that can transmit light waves.
3. Where does light reactions take place?
4. Looking directly into a mirror you see yourself. What property does this demonstrate?
5. Angle of incidence is always
6. ..... is a form of energy that we can see with our eyes.
7. Light years are a unit of what?
8. A ..... lens makes objects appear smaller and further away.
9. An image being in such a position that top and bottom are reversed is:
10. If red light shines on a green object
11. When light bounces off an object
12. When light passess through this object, it is refracted off of one wall and reflected to another, the light is refracted again and as it leaves the object, it forms a rainbow. What is this object?
13. X is a surface that cannot produce clear images. What is X?
14. What is the saying that can help you remember the order of the visible spectrum?
15. This object is used in cameras, DVD players, telescopes, and microscopes to refract light
16. The closer the screen, the ..... is the shadow formed.
17. The closer the source of light, the ..... is the shadow.
18. How fast does light travel through empty space (a vacuum) in miles per second?
19. Light travels faster in water than in air.
20. The impression of an image doesn't vanish immediately from the retina. It persists there for about ..... secs
21. The distance between Nitin and his image is 6m. As he moves 2m towards the plane mirror, Calculate the distance between mirror and his image.
22. The colour of the shadow depends on the colour of .....
23. Black absorbs all light.
24. A translucent object, such as a piece of colored glass, allows ..... light to pass through it.
25. Refractions will cause the object to look
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