Question

with the help of diagram explain the conversion of a convex lens and diverging action of a concave lens

Answer 1

A concave mirror is called a converging mirrorbecause it brings incoming parallel rays together as shown below. It causes these rays to converge.
Convex mirrors are called diverging mirrorsbecause they diverge rays of light that hit them. Parallel rays of light that approach and reflect off a convex mirror will diverge from the focus of the mirror after reflecting. 
please Mark as brainliest.

Answer 2

Answer:

because the convex lens is thicker at middle and thinner at edges and concave lens is different from it