Question

transparent sphere of radius r and refractive index n is kept in air. at what distance from the surface of the sphere should a point object be placed on the principal Axis so the form of real image at the same distance from the second surface of a sphere​

Answer 1

Answer:

Explanation:

R is the radius of the sphere,

u is the refractive index of medium,

u2/v-u1/v=u2-u1/r,

refraction of surface of sphere,

1/x=u-1/R,

x=R/u-1.

Hope it helps.