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CMC Medical CMC-Medical Ludhiana Solved Paper-2007

  • question_answer
    The velocity of sound in air at NTP is 330 m/s. What will be its value when temperature is doubled and pressure is halved?

    A)  330 m/s                              

    B)  165 m/s

    C)  330\[\sqrt{3}\] m/s       

    D)  330\[\sqrt{2}\]m/s

    Correct Answer: D

    Solution :

                    As there is no effect of change in pressure on velocity of sound in air, and velocity is proportional to \[\sqrt{T},\] therefore, when temperature is doubled, velocity becomes\[330\sqrt{2}m\text{/}s.\]


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