Question

Briefly explain how many types of lenses are there example each of them

Answer 1

Answer:

The two main types of lenses are: Convex Lens (Converging) Concave Lens.

Explanation:

Convex Lens - The convex lens is a lens that converges rays of light that convey parallel to its principal axis (i.e. converges the incident rays towards the principal axis) which is relatively thick across the middle and thin at the lower and upper edges. The edges are curved outward rather than inward.

Concave Lens -

A concave lens is a lens that possesses at least one surface that curves inwards. It is a diverging lens, meaning that it spreads out light rays that have been refracted through it. A concave lens is thinner at its centre than at its edges, and is used to correct short-sightedness (myopia).