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CMC Medical CMC-Medical Ludhiana Solved Paper-2008

  • question_answer
    A boat of anchor is rocket by waves of velocity 25 m/s having crests 100 m apart. They reach the boat once every

    A)  4.0 s                                     

    B)  8.0 s

    C)  2.0 s                                     

    D)  0.25 s

    Correct Answer: A

    Solution :

                    The required relation can be given as \[v=n\lambda \] Given, v = 25 m/s, \[\lambda \] = 100 m \[\therefore \]  \[25=n\times 100\] \[\Rightarrow \]               \[n=\frac{25}{100}=\frac{1}{4}\] \[\Rightarrow \]               \[n=0.25\] Then,    \[T=\frac{1}{n}=\frac{1}{0.25}=4\,s\]


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