Question

explain the power of lens​

Answer 1

Answer:

Power of lens is the ability of the lens to converge the rays of light falling on it. It can also be defined as P=1/f where f is the focal length. ... One Dioptre is the power of a lens whose focal length is 1 metre. Convex lens has positive power while concave lens has negative power.

Answer 2

Answer:

The ability of a lens to bend the light rays is called power of lens. ... A lens of shorter focal length bends the light ray more, and have greater power. Thus power of a lens is defined as the reciprocal of its focal length (f) in metres. Power of lens P=f(in meters)1. Unit of power of lens is 'metre' and its