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CET Karnataka Medical CET - Karnataka Medical Solved Paper-2001

  • question_answer
     If the velocity of sound in air is 336 m/s. The maximum length of a closed pipe that would produce a just audible sound will be:

    A)  3.2 cm

    B)  4.2 m

    C)  4.2 cm

    D)  3.2 m

    Correct Answer: B

    Solution :

     Velocity of sound in air \[\upsilon =330m/s\]As we are quite well known that the lowest frequency of audible sound is 20 Hz. Hence maximum length of a closed pipe to produce just audible sound is given by \[l=\frac{336}{4v}=\frac{336}{4\times 20}=4.2m\]


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