Question

12) Units of power of lens a)cm-1 b) m c) Diaptors d) a and c
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Answer 1

Explanation:

dioptre

• 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.)

Answer 2

Answer:

Dioptre is the correct answer...

Hope ! answer is helpful for you...