Question

If the focal length of a convex lens is 20 cm find the power of lens..​

Answer 1

Explanation:

Hi friend!!!

The power of the lens is the reciprocal of the focal length in meters.

If the focal length is in centimeters, then the power is 100/focal length

f = 20 cm

P = 100/20 = 5 dioptre = 5 D

Hope it helps!!!

Answer 2

Answer:

Hope it will help You

Explanation:

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