Multiple choice

The eye is the organ of vision. Which among the following parts of the mammalian eye governs the total amount of light entering into the eye?

  1. Cornea

  2. Eye lens

  3. Retina

  4. Iris

  5. Blind spot

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Just behind the cornea is a dark coloured muscular diaphragm which has a small circular opening in the middle. The iris regulates the amount of light entering the eye. It regulates the light by adjusting the size of the pupil.