Q. The stream of a river is flowing with a speed of . A swimmer can swim at a speed of . What should be the direction of the swimmer with respect to the flow of the river to cross the river straight ?

JEE Main JEE Main 2019Motion in a Plane Report Error

Solution:

For swimmer to cross the river straight

30°
So, angle with direction of river flow = 90° + =
120°
Option (4)

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