What happens to the size of the pupil when we enter a dark room?

It remains the same.

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It expands.

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It contracts.

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It reduces to half.

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Solution

The correct option is B It expands.
The pupil expands in the dark to allow more light to enter and contracts in bright light to limit the amount of light entering.

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Similar questions

When we enter a dark room, what happens to the size of the pupil?

When we move from dark to bright space, the pupil ___ .

When we enter into a dark room our vision is impaired for few seconds. Why does this happen?

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