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

  • question_answer
    A resonance air column of length 20 cm resonates with a tuning fork of frequency 250 Hz. The speed of sound in air is [AFMC 1999; BHU 2000; CPMT 2001]

    A)            300 m/s                                  

    B)            200 m/s

    C)            150 m/s                                  

    D)            75 m/s

    Correct Answer: B

    Solution :

               For closed pipe \[{{n}_{1}}=\frac{v}{4l}\Rightarrow 250=\frac{v}{4\times 0.2}\]\[\Rightarrow v=200\,m/s\]


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