Question

Formula of focal length of lens with respect to refractive index of medium

Answer 1

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