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CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2010

  • question_answer
    Velocity of sound in air is\[320\text{ }m{{s}^{-1}}\]. A pipe closed at one end has a length of 1 m. Neglecting end correction, the air column in the pipe cannot resonate with sound of frequency

    A)  80 Hz                   

    B)         240 Hz

    C)  320 Hz                 

    D)         400 Hz

    E)  560 Hz

    Correct Answer: C

    Solution :

    Fundamental frequency \[{{f}_{0}}=\frac{v}{4L}\] \[=\frac{320}{4\times 1}=80\,Hz\] So, it can resonate with\[{{f}_{0}},3{{f}_{0}},5{{f}_{0}},7{{f}_{0}}\] \[\therefore \]Cannot resonate with 320 Hz.


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