Question

what happens with the rays of sun are focused at a point on the paper by using concave mirror

Answer 1

Answer:

IT IS LOW TO BURN A PAPER. Concave mirror converges the light rays to a single direction which cause excess heat but in case of convex mirror the light rays falling on it gets diverged and thus cannot point on any one direction. ... So convex mirrors cannot burn paper like concave mirrors.

Explanation:

Answer 2

Answer:

The paper starts to burn

Explanation:

Concave mirror is called converging  mirror as it converges the light rays at a point. Due to converging light at a point heat energy is increased and paper starts burn.

Hope it will be helpful.