Question

Distinguish between a convex lens and concave lens. Which of the two is a converging lens : convex lens of concave lens?

Answer 1

Convex Lens	Concave Lens
1.A convex lens converges or concentrates the light rays to a point.	1. A concave lens diverges the rays passing through it.
2.A convex lens has a real focus.	2.A concave lens has a virtual focus.
3.A convex lens has a positive focal length.	3.A concave lens has a negative focal length.

A convex lens is a converging lens .