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JEE Main & Advanced Physics Wave Mechanics Question Bank Organ Pipe (Vibration of Air Column)

  • question_answer
    In one metre long open pipe what is the harmonic of resonance obtained with a tuning fork of frequency 480 Hz                    [J & K CET 2005]

    A)            First                                         

    B)            Second

    C)            Third                                        

    D)            Fourth

    Correct Answer: C

    Solution :

                       In case of open pipe, \[n=\frac{N}{2l}\]where N = order of harmonics = order of mode of vibration Þ\[N=\frac{n\times 2l}{v}\]                    \[=\frac{480}{330}\times 2\times 1\]= 3 (Here  v = 330 m/s)


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