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BHU PMT BHU PMT Solved Paper-2003

  • question_answer
    When sound waves travel from air to water, which one of the following remains constant? [BHU M-2003]

    A)  Time period                      

    B)  Frequency

    C)   Velocity                                             

    D)  Wavelength

    Correct Answer: B

    Solution :

                     This is no effect of frequency on the speed of sound. Sound waves of different frequencies travel with the same speed in air although their wavelength in air is different. If the speed of sound ware dependent on frequency we would not have enjoyed the orchestra. If air is blowing then speed of air changes.   


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