Q.

Is it true that the pupil expands in absence of light?


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a

True

b

False 

answer is A.

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Detailed Solution

The given statement is true.
The human eye enables us to see this wonderful and colourful world. The image formed by the retina of the eyes is real and inverted, which is then sent to the brain with the help of optic nerves, and then finally, we can see the objects around us when we are walking through the dark place then the iris muscles relax, and pupil expands so that more and more light can pass into our eyes and we can see objects around us.
 
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Is it true that the pupil expands in absence of light?