Question

What is power of lens write its unit and define it​

Answer 1

It is defined as the reciprocal of focal length or it is the ability of a lens to bend the rays of light falling on it. Its SI unit is dioptre

Answer 2

Answer:

converging or diverging ability of spherical lens is called power of lens.

Unit of power- dioptre

dioptre-if focal length of lens is 1m or100cm then its power is said to be 1 dioptre.