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JEE Main Physics question

PhysicsMotion in a PlaneJEE Main

A boat moves with a speed of 5 km/h relative to water in a river flowing with a speed of 3 km/h and having a width of 1 km. The minimum time taken around a round trip is

Answer: (D)

Solution

To return to the same point, the boat angles upstream: ground speed

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Question ID VK-152319