Home › CBSE Class 10 › Science › The Human Eye and the Colourful World › The size of the pupil is controlled by the:
The size of the pupil is controlled by the:
ARetina
BCornea
CIris
DSclera
Answer & Solution
Correct answer: C. Iris
1. The iris is the coloured muscular diaphragm behind the cornea.
2. It opens (dilates) or closes (constricts) the pupil aperture.
3. This regulates the amount of light entering the eye.
_Source: NCERT Class 10 Science, Ch 10 "The Human Eye and the Colourful World", §10.1_
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