A man crosses a 320 m wide river perpendicular to the current in 4 min. If in still water he can swim with a speed 5/3 times that of the current, then the speed of the current, in mm^{ -1} in is

Manipal Entrance Test 2013 Physics Paper

Question : 32 of 60

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A man crosses a 320 m wide river perpendicular to the current in 4 min. If in still water he can swim with a speed

times that of the current, then the speed of the current, in mm‌−1 in is

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