Question

define the unit of power of a lens.

Answer 1

The power of a lens is the reciprocal of its focal length in meters. It is represented by the letter P. The power P of a lens of focal length f is given by f = 1/P. The SI unit of power is dioptre.

Hope it helps....

Answer 2

Hello ,


___________________

●The unit of power is Dioptre (D).

●Power of a lens is to be 1 D if the focal length of a lens is 1 m.

___________________


Hope it helps u! ▪▪▪▪▪

# Nikky