Question

what do you mean by power of lens? define 1D?

Answer 1

Answer:

hope it helps you mark me as brainliest plz....

Answer 2

Optical power is the degree to which a lens, mirror, or other optical system converges or diverges light.

It is equal to the reciprocal of the focal length of the device: P = 1/f.

A dioptre is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres.

metres. (1 D = 1 m−1.) 

Hope it helps u....pls mark it as the brainliest..