Question

according to brightness of body which of the following parts of eye expands and shrinks?​

Answer 1

Answer:

pupil

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Answer 2

Explanation:

Pupil

Since most of the light entering your eye does not escape, your pupil appears black. In dim light, your pupil expands to allow more light to enter your eye. In bright light, it contracts. Your pupil can range in diameter from 1/16 inch (1.5 mm) to more than 1/3 inch (8 mm).