Question

State two differences between a convex and a concave lens.

Answer 1

Convex lens	Concave lens
A convex lens is thicker at the centre and thinner around the edges	A concave lens is thicker around the edges and thinner at the centre
It is also called a converging lens as it converges the light rays at a point	It is also called a diverging lens as the light rays appear to diverge from a point