Q7 of 47 Page 282

What controls the amount of light entering the eye?

The pupil regulates the amount of light entering the eye. However, the size of the pupil is controlled by the Iris. So, we can say that the iris controls and regulates the amount of light entering the eye


More from this chapter

All 47 →
5

What is the value of the speed of light?

 6

If two plane mirrors make an angle of 60°, how many images will you find?

 8

What controls the size of the pupil?

 9

Describe the functioning of the periscope. Also, tell that how many mirrors are there in a periscope.