Question

A hemispherical portion of the surface of a solid glass sphere (μ = 1.5) of radius r is silvered to make the inner side reflecting. An object is placed on the axis of the hemisphere at a distance 3r from the centre of the sphere. The light from the object is refracted at the unsilvered part, then reflected from the silvered part and again refracted- at the unsilvered part. Locate the final image formed.

Answer 1

As, negative sign indicates images are formed inside APB. So, image should be at C.
So, the final image is formed on the reflecting surface of the sphere.