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NTSE Sample Paper NTSE SAT Practice Test-13

  • question_answer
    A train of 150 m length is going towards north  at 10 \[m{{s}^{-1}}\]and a parrot flies towards south at  5 \[m{{s}^{-1}}\]over the train parallel to it the time taken by the parrot to cross the train is

    A) 8 s                               

    B) 10 s

    C) 12 s                             

    D) 15 s

    Correct Answer: B

    Solution :

    [b] Relative velocity of the parrot with respect to the train = (10 + 5) ms-1 =15ms-1 Time taken by the parrot to cross the train \[=\left( \frac{150}{15} \right)\,\,s=10s\]


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