Question

define 1dioptre of power of lens .----------(5)​

Answer 1

Answer:

didto zoetrope disco do

Answer 2

$\blue \longrightarrow\large\pink{Hope \: This \: Will \: Help \: You..} \blue \longleftarrow$

Explanation:

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.