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Q.

Which part of human eye controls the amount of light entering the eye?


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a

Cornea           

b

Retina           

c

Iris           

d

None of these 

answer is C.

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Detailed Solution

Iris is a part of human eye which controls the amount of light entering the eye.
The iris is the ring of pigmented tissue around the pupil that varies in colour from person to person; it contracts and expands to control the amount of light entering the eye through the pupil, and the pupil is the opening in the centre of the iris where light enters the eye.
 
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