Banking Physics Wave Mechanics Question Bank Mechanics

  • question_answer A person swims in a river aiming to reach exactly on the opposite point on the bank of a river. His speed of swimming is 0.5 m/s at an angle of \[120{}^\circ \] with the direction of flow of water. The speed of water is

    A)  1.0 m/s                        

    B)  0.5 m/s

    C)  0.25 m/s             

    D)         0.43 m/s

    Correct Answer: C

    Solution :

     Here v = 0.5 m/sec.     u=? \[\sin \theta =\frac{u}{v}\Rightarrow \frac{u}{0.5}=\frac{1}{2}\]or \[u=0.25m{{s}^{-1}}\]


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