Question

formula of power of lens ??​

Answer 1

Answer:

power of lens =1/focal length of lens.

hope its help u.

Answer 2

Answer:

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. ... The formula for surface power is Ds = (u-1)/r, where u is the index of refraction and r the radius of curvature in meters.