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

  • question_answer
    What is minimum length of a tube, open at both ends, that resonates with tuning fork of frequency 350 Hz ? [velocity of sound in air = 350 m/s]                                          [DPMT 2004]

    A)            50 cm                                      

    B)            100 cm

    C)            75 cm                                      

    D)            25 cm

    Correct Answer: A

    Solution :

               Fundamental frequency \[n=\frac{v}{2l}\]                    \[\Rightarrow 350=\frac{350}{2L}\]\[\Rightarrow L=\frac{1}{2}m=50\,cm.\]


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