English, asked by Anonymous, 5 months ago


The unit of power of lens is​

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Answered by Anonymous
2

Answer:

dioptre

A dioptre or diopter 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.) It is thus a unit of reciprocal length.

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