Question

what do you mean by power of lens​

Answer 1

Answer:

Power of lens is the ability of the lens to converge the rays of light falling on it. Definition: 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 .

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Answer 2

Answer:

Power of lens is the ability of the lensto 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 lenshas positive power while concave lenshas negative power.