The size of the pupil of the eye is adjusted by:

How does the eye change in order to focus on near or distant objects ?

Which of the following changes occur when you walk out of bright sunshine into a poorly lit room ?

The descriptions of five kinds of images are given below:

(a) diminished and virtual (b) enlarged and real

(c) enlarged and erect (d) real and inverted

(e) virtual and the same size

Which one of these describes the image formed:

(i) on the retina of the eye?

(ii) by a magnifying glass?

(iii) by a convex driving mirror on a car?

(iv) by a plane mirror?

(v) on the screen of a slide projector?

What shape are your eye-lenses:

(a) when you look at your hand ?

(b) when you look at a distant tree ?