Physics, asked by 9559rohanjahdale, 10 months ago

What is meant by power of lens?what does its sign (+ve or -ve) indicate

Answers

Answered by hardik2723
2

Answer:

power of lens is reciprocal of focal length and it is negative in concave lens and positive in convex lens It's unit is dioptre when focal length is in metre

Answered by Adit7788
1

please mark as brainlist please

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.

S.I. unit of power is D(Dioptre).

It is represented by letter 'P'.

Power of a lens is the reciprocal of its focal length.

Dioptre is the S I unit of power of lens.

One Dioptre is the power of a lens whose focal length is 1 metre.

It indicates both signs.

Convex lens has positive power while concave lens has negative power.

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