Question

define power of lens.​

Answer 1

Explanation:

The diopter is the unit of measure for the refractive power of a lens. The power of a lens is defined as the reciprocal of its focal length in meters, or D = 1/f, where D is the power in diopters and f is the focal length in meters. Lens surface power can be found with the index of refraction and radius of curvature.

Answer 2

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Power of a lens is the ability to converge or diverge the ray of light falling on it is reciprocal of focal length of the lens.♥️