Question

Suppose the medium in the previous question is water. Select the correct option(s) from the list given in that question.

Answer 1

(a) v_A > v_B > v_C
(d) v_B = (v_A + v_C )/2

In any other medium, the speed of light is given by $v=c/\eta ,\mathrm{where}\mathrm{\eta }\mathrm{is}\mathrm{the}\mathrm{refractive}\mathrm{index}\mathrm{of}\mathrm{the}\mathrm{medium}$ and according to Doppler effect, for an observer moving towards the source ,speed of light appears to be more than the other two cases. On the other hand, it will be least when the observer is moving away from the source.