1.

A river is flowing from W to E with a speed of 5 m/min. A man can swim in still water with a velocity 10 m/min. In which direction should the man swim so as to take the shortest possible path to go to the south.    [BHU 2005]

A.               30° with downstream             
B.                          60° with downstream         
C.                          120° with downstream           
D.                          South
Answer» D.                          South


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