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Haryana PMT Haryana PMT Solved Paper-2002

  • question_answer
    The distance between two consecutive crests in a wave train produced in string is 5 cm. If two complete waves pass through any point per second, the velocity of wave is:

    A)  2.5 cm/s             

    B)  5 cm/sec

    C)  10 cm/sec          

    D)  15 cm/sec

    Correct Answer: C

    Solution :

                    Distance between two consecutive crests \[=5cm\] \[\therefore \]                   wavelength  \[\lambda =5cm\] frequency \[n=2\]                 \[\therefore \]  velocity \[\upsilon =n\,\lambda \]                                 \[=2\times 5=10cm/\sec .\]


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