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

  • question_answer
    An open pipe of length 33 cm resonates with frequency of 100 Hz. If the speed of sound is 330 m/s, then this frequency is                                                                   [RPMT 2002]

    A)            Fundamental frequency of the pipe

    B)            Third harmonic of the pipe

    C)            Second harmonic of the pipe

    D)            Fourth harmonic of the pipe

    Correct Answer: C

    Solution :

                       Frequency of p th harmonic             \[n=\frac{pv}{2l}\] Þ \[p=\frac{2\,l\,n}{v}=\frac{2\times 0.33\times 1000}{330}=2\]


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