A man who can swim at the rate of 2 km/hr (in still river) crosses a river to a point exactly opposite on the other bank by swimming in a direction of 120 0 to the flow of the water in the river. The velocity of the water current in km/hr is
Text Solution
Verified by ExpertsThe correct answer is:
A
Let speed of current be u.
For net velocity of man to be
normal to river flow.
2 sin 30° = u
or u = 1 km/hr.
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