Question

Define one dioptre of power of a lens.

Answer 1

A dioptre is the unit of measurement of the optical power of the lens or curved mirror

Answer 2

Heya Mate........

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.) 

Hope this will help you...

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