Question

explain types of concave lenses and convex lens​

Answer 1

Answer:

concave lens is the lens which is opposite to the convex mirror..

convex lens is the lens which is opposite to the concave mirror

Answer 2

Answer:

Convex lens: The lenses whose mid portion is thick but the edges are thin through which small things are seen bigger are called convex lens or converging lens.

Concave lens: The lenses whose mid portion is thinner than the edges by which big things are seen smaller are called concave lens or diverging lens.