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JEE Main & Advanced Physics Wave Mechanics Question Bank Vibration of String

  • question_answer
    The velocity of waves in a string fixed at both ends is 2 m/s. The string forms standing waves with nodes 5.0 cm apart. The frequency of vibration of the string in Hz is [SCRA 1998]

    A)            40  

    B)            30

    C)            20  

    D)            10

    Correct Answer: C

    Solution :

                         Here \[\frac{\lambda }{2}=5.0\,cm\,\,\]\[\Rightarrow \lambda =10\]\[cm\]                    Hence \[n=\frac{v}{\lambda }=\frac{200}{10}=20\]Hz.


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