Question

Define 1 dioptre of power of a lens
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Answer 1

Answer:

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:

$1dioptre \: is \: power \: of \: lens \: \\ whose \: focal \: length \: is \: 1cm \: \\ \\ 1d= \frac{1}{1m}$

$hope \: my \: answer \: helps \: you$