Question

the reciprocal of focal length to divergence of convergence of light rays achieved by lens is called power of lens is this is correct or not​

Answer 1

Answer:

the bending of light rays towards the principal axis is called convergence and bending of light rays away from the principal axis is called divergence. The degree of convergence or divergence of a lens is expressed in terms of its power. ... Thus power of a lens is defined as the reciprocal of its focal length