Which of the following controls the amount of light entering the eye ?

Which of the following controls the amount of light entering into the human eye?

Which of the following regulates the amount of light entering the eye?

Which of the following regulates the amount of light entering the eye?

How is the amount of light entering the eye controlled ?

The path of light entering into the eye .

Name the part of the eye : (a) which controls the amount of light entering the eye. (b) on which the image is formed. (c) which changes the focal length of eye-lens.

Look at the figure and answer the following questions: The amount of light entering the eye is con trolled by the __________.

Which part of the eye controls the amount of light entering in it or The black pigment in the eye which reduces the internal reflection is located in