Answer to Question #284540 in Optics for luna

Question

Find the ratio of the optical power (force) of the lenses made from glass and

diamond with the same radius of curvature. The index of refraction of glass is n_g = 1.5,

the index of refraction of diamond is n_d = 2.42 and the index of refraction of air is n = 1.

Answer 1

$d=\frac{\sqrt{n_d^2-n^2}}{\sqrt{n_g^2-n^2}}=\sqrt{\frac{2.42^2-1}{1.5^2-1}}=1.97.$