Question

What happens to the size of the pupil of our eye in bright light?

Answer 1

Explanation:

The normal pupil size in adults varies from 2 to 4 mm in diameter in bright light and increases to 4 to 8 mm in the dark. Iris controls the size of the pupil

Answer 2

The size of the pupil of our eye in bright light dilate (contracts).

Explanation:

• Pupil is at the centre of the iris.
• It appears dark because the light falling into pupil is absorbed by the eyes.
• The shape of the pupil is different for different animals.
• The amount of light entering defines the size of the pupil.
• When the light is more, then eyes requires only small amount of light to see, so the muscles of the eyes contracts which constricts the pupil.
• When the light is dim, then eyes requires more amount of light to see, so the muscles of the eyes expands which dilates the pupil.