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Class 10 Science Chapter 11 The Human Eye And The Colourful World Quiz 2 (25 MCQs)

Quiz Instructions

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1. The person who is suffering from ..... requires bi-focal lens.
2. Iris controls the size of
3. When the light rays enters the eye, most of the refraction occurs at the
4. The change in focal length of an eye lens is caused by the action of the
5. By passing light through a prism, you can tell .....
6. Why do stars twinkle?
7. Changes in the centrifugal of the lens of the eye ..... does it?
8. To see an object comfortably and distinctly, we must hold it about ..... cm from our eyes.
9. A person with ..... can see nearby objects clearly but can't see distant objects distinctly.
10. The human eye can focus on objects at different distances by adjusting the focal length of the eye lens. This is due to
11. The near point for a young adult with normal vision is
12. We can see the sun before the actual sunrise about
13. ..... controls the amount of light that enters into the eye
14. What is the correct order of the colors of the rainbow?
15. The stars twinkle but the planets do not twinkle at night because
16. ..... is a light sensitive layer that has numerous nerve cells
17. When light passes at an angle to the normal from one material into another material in which its speed is lower
18. The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light
19. Optic nerve cells sensitive to bright light
20. Dispersion of light by a prism is due to the change in-
21. The focal length of eye lens is controlled by:
22. Convex lens of suitable focal length can correct-
23. The shape of eye-ball is nearly .....
24. ..... send signals to the brain
25. The lens focuses light on the .....
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