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BHU PMT BHU PMT (Screening) Solved Paper-2008

  • question_answer
    A train of 150 m length is going towards north direction at a speed of\[10\text{ }m{{s}^{-1}}\]. A parrot flies at a speed of\[5\text{ }m{{s}^{-1}}\]towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to

    A)  12s                                       

    B)  8s

    C)  15s                                       

    D)  10s

    Correct Answer: D

    Solution :

                     Relative velocity of the parrot w.r.t. the train \[=[10-(-5)]\text{ }m/s=15\text{ }m/s\] Time taken by the parrot to cross the train \[\frac{150}{15}=10\,s\]


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