Why a straight rod appear s bent in water
A rod placed in water appears to be bent because of refraction of light. The refraction causes an apparent shift in the position of the part of the rod within the water.
Since light-ray bend at interface of air-water because of refraction, so the tip of stick appears to be at A1 rather than at A (actual position). Thus, stick appears to be bent inside water.What are you looking for?