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A person walking in a dark corridor ente...

A person walking in a dark corridor enters into a brightly lit room :
(a) State the effect on the pupil of the eye.
(b) How does this affect the amount of the light entering the eye ?

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The correct Answer is:
(a) Pupil becomes smaller (b) Amount of light entering the eye is reduced
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LAKHMIR SINGH & MANJIT KAUR-THE HUMAN EYE AND THE COLOURFUL WORLD -Exercise
  1. What happens to the eye when you enter a darkened cinema hall from bri...

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  2. Why does it take some time to see objects in a dim room when you enter...

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  3. A person walking in a dark corridor enters into a brightly lit room : ...

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  4. Ciliary muscles of human eye can contract or relax. How does it help i...

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  5. Describe and explain, how a normal eye can see objects lying at variou...

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  6. There are two types of light-sensitive cells in the human eye : (a) ...

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  7. What are rods and cones in the retina of an eye ? Why is our night vis...

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  8. (a) How does the convex eye-lens differ from the ordinary convex lens ...

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  9. (a) What happens to the size of pupil of our eye (i) in dim light (ii)...

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  10. (a) Draw a simple diagram of the human eye and lebel clearly the corne...

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  11. What happens to the eye when you enter a darkened cinema hall from bri...

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  12. The human eye forms the image of an object at its

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  13. The change is focal length of an eye-lens is caused by the action of t...

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  14. The least distance of distinct vision for a young adult with normal vi...

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  15. Refraction of light in the eye occurs at :

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  16. To focus the image of a nearby object on the retina of an eye :

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  17. The term "accommodation" as applied to the eye, refers to its ability ...

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  18. Which of the following controls the amount of light entering the eye ?

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  19. The human eye possesses the power of accommodation. This is the power ...

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  20. How does the eye change in order to focus on near or distant objects ?

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