Question

What is meant by power of a lens ​

Answer 1

Answer:

power of lens is the ability of lens to converge the Ray's of light following it

Answer 2

Power of lens is the ability of the lens to 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 lens has positive power while concave lens has negative power.

advanced

Power of a lens is defined as the reciprocal of its focal length.i.e. P=1/f. Its S.I. unit is dioptre(D). Dioptre is the unit of power of a lens whose focal length is in meters

The power of a lens is defined as the reciprocal of its focal length. It is represented by the letter P.

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