Question

The combination responsible for admitting different amounts of light into the eye is

Answer 1

Iris and the pupil:

1. The combination responsible for admitting different amounts of light into the eye is of two parts, Iris and the pupil.
2. The main work of the pupil is to regulate the amount of light that enters the eye, and the Iris controls the size of the pupil.
3. Iris is the ring of coloured tissue surrounding the pupil that varies in colour from person to person.
4. It contracts and expands to control the amount of light coming into the eye through the pupil.
5. The pupil is an opening in the centre of the iris, where light rays enter the eye.

Thus, Iris and the pupil are responsible for admitting different amounts of light into the eye.