Answer the following questions:
(c) A diver under water, looks obliquely at a fisherman standing on the bank of a lake. Would the fisherman look taller or shorter to the diver than what he actually is?

Explanation

Taller.
`rArr` Let pure water is filled in a vessel. A fish is there at the bottom as an observer.
`rArr` Fish observes the eye of a man by keeping its vision in direction of OQ. As shown in figure, by extending OQ in air it will meet at E. on normal of surface.

`rArr` Hence, fish observes eye of man at El instead of E.
`rArr` Here, EP `= h_0` which is real height of eye from surface and `E.P =h_i` which is apparent height of eye from surface.
`rArr` From this we can conclude that if object is in rarer medium and observer is in denser medium, then image will be appeared to be shifted up
`h_1 gt h_0`.