Question

what is convex lens and concave lens ​

Answer 1

Answer:

Convex lens are the lens which focus the light ray at a specific point.

Concave lens are those which diverges the light rays.

Answer 2

Answer:-

Convex lens- A lens which is thicker at the centre than the edge is called convex lens.

Concave lens- A lens which is thinner at the centre then the edge is called concave lens.