1. Can you see a bright sharp spot of light on the paper? 2. Why is the convex mirror called a Divergent mirror?

Question

Hold a convex mirror in Your hand and face the reflecting surface of the mirror towards the sun. Focus the light reflected by the mirror on a black paper sheet placed near the mirror. Gradually move the paper sheet backward and forward Are you able to get a bright sharp spot of light on the paper? The parallel rays coming from sun are not converged at spot by the convex mirror but are spread. That is why, the convex mirror is called a Divergent mirror.

Incident rays from a convex mirror parallel to principle axis after reflection. This points is called Focus of convex mirror. How is the image formed by a concave mirror? 

1. Can you see a bright sharp spot of light on the paper?

2. Why is the convex mirror called a Divergent mirror?

3. What is known as Focus of convex mirror?

Answer 1

1. No, we cannot get a bright sharp spot of light on the paper.

2. The parallel rays coming from sun are not converged at spot by the convex mirror but spread (diverged). That is why the convex mirror is called a Divergent mirror.

3. Incident rays from a convex mirror parallel to principal axis seem to come from a point on principal axis after reflection. This point is called Focus of convex mirror.