Question

Select the most appropriate word from the given box and fill in the following blanks.

refracted diameter converging power convex small concave dioptre diverging focal length two aperture

Power of a lens is the reciprocal of ______ of the lens.

Answer 1

Power of a lens is the reciprocal of focal length of the lens.

Explanation:

The power (P) of a lens is defined as the reciprocal of its focal length (f) measured in metres (P = 1/f).