If we enter any dark room, what happens to the size of our pupil?

remains same

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expands

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contracts

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can't say

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Solution

The correct option is B expands
The pupil will adjust the size according to the amount of light. The size of the pupil when we enter any dark room expands in order to allow more amount of light to enter our eye, which assists visibility. The size of pupil decreases when we are in a place having more brightness.

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