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Q.

Which of the following is the function of iris in human eye?


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a

Convert light into electrical signal

b

Regulate the amount of light

c

Act as the supporting wall for the eyeball

d

None of these 

answer is B.

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Detailed Solution

The work of the iris is to regulate the amount of light.
Iris is a thin, pigmented shape which can alter the quantity of light that may enter the retina. Also, it determines the eye shade. Iris controls the dimensions and diameter of the eye lens and, therefore, regulates the amount of light.
 
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