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(a) Draw a simple diagram of the human e...

(a) Draw a simple diagram of the human eye and lebel clearly the cornea, iris, pupil, ciliary muscles, eye-lens, retina, optic nerve and blind spot.
(b) Describe the working of the human eye with the help of the above diagram.
(c) How does the eye adjust itself to deal with light of varying intensity ?

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LAKHMIR SINGH & MANJIT KAUR-THE HUMAN EYE AND THE COLOURFUL WORLD -Exercise
  1. (a) How does the convex eye-lens differ from the ordinary convex lens ...

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

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

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

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

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

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

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  8. Refraction of light in the eye occurs at :

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

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

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

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

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

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  14. Which of the following changes occur when you walk out of bright sunsh...

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  15. The size of the pupil of the eye is adjusted by :

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  16. What shape are your eye-lenses : (a) when you look at your hand ? ...

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  17. Suggest how your irises help to protect the retinas of your eyes from ...

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  18. (a) Which parts of the eye cause rays of light to converge on the reti...

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  19. An object is moved closer to an eye. What changes must take place in t...

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  20. Why does the eye-lens not have to do all the work of converging incomi...

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