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J & K CET Medical J & K - CET Medical Solved Paper-2008

  • question_answer
    The frequency of fundamental note in an organ pipe is 240 Hz. On blowing air, frequencies 720 Hz and 1200 Hz are heard. This indicates that organ pipe is

    A)  a pipe closed at one end

    B)  a pipe open at both ends

    C)  closed at both ends

    D)  having holes like flute

    Correct Answer: A

    Solution :

                     Since,  \[\frac{720}{1200}=\frac{6}{10}=\frac{3}{5},\]ie, \[3:5\] These odd harmonics are produced only if the pipe is closed at one end.


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