Consider the situation in figure. The bottom of the pot is a reflecting plane mirror, S is a small fish and T is a human eye. Refractive index of water is mu. (a) At what distance(s) from itself will the fish see the image(s) of the eye ? (b) At what distance(s) from itself will the eye see the image(s) of the fish. (11-T

Explanation

(a) Fish is seeing eye:
(i) Directly:

`FE^'=H/2+muH`
(ii) Image of `E^'` formed by mirror

(b) Eye is seeing fish:
(i) Directly:

`EF^'=H+(H)/(2mu)`
(ii) Now eye sees image of fish formed by mirror. Image fish F is formed at `F_0` by mirror.

`EF_0^'=H+(3H)/(2mu)`