Question

concave mirror can burn paper but not convex why ??

Answer 1

Convex mirror converges the light ray which causes excess heat.
Concave mirror divrges the light ray that means it produces heat.
so concave can burn a paper but not convex

HEY MATE HOPE THIS HELPS YOU.

Answer 2

Hi

Concave mirror can burn paper but not convex because Concave mirror converges the light rays which cause excess heat . But convex mirror diverges the light rays and the light cannot have one point at One Direction which produces less heat that is why concave mirror can burn paper.

May it is helpful for you.