Question

explain power of lens,what is its units​

Answer 1

Answer:

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

The power of a lens is defined as the ability of the lens to converge or diverge a beam of light falling on it. A lens is said to be of greater power if it diverges or converges a beam of light more strongly by focusing them closer to the optical centre.It can also be defined as P=1/f where f is the focal length. S.I. unit of power is D(Dioptre).

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Answer 2

Answer:

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

Explanation:

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