Question

define 1 dioptre of power lens​

Answer 1

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.) It is thus a unit of reciprocal length

Answer 2

Answer:

1 dioptre of power lens is equal to the reciprocal of the focal length.....

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