Question

the SI unit of the power of lense is _________​

Answer 1

Answer:

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A dioptre (British spelling) or diopter (American spelling) is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres. (1 dioptre = 1 m−1.)

Explanation:

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Answer 2

Answer:

dioptre

Power of Lens and its Unit

The S.I. unit of power is dioptre (D). Hence, one dioptre is the power of a lens of focal length one meter.

Explanation:

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