Question

what is convex lens

Answer 1

A convex lens is a converging lens. When parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus. The distance between the principal focus and the centre of the lens is called the focal length.

Answer 2

Hey..

Convex lens is lens which is thinner at tops and bottoms (edges) and thicker at middle.

This lens is also known as converging lens.

Hope it's helpful to u.