TS EAMCET Medical 2018 May 2 Shift 1 Paper

A diver, 30 m below water surface is trying to shine a torch light towards the point O which is horizontally 30 m away. The amount and direction in which diver has to swim (in the figure) so that the light can not travel outside the surface of water is
(Refractive index of water =

4

3

)