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Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2010

  • question_answer
    A stretched string of length \[l\] fixed at both ends can sustain stationary waves of wavelength \[\lambda \] given by

    A) \[\lambda =\frac{{{n}^{2}}}{2l}\]                                              

    B) \[\lambda =\frac{{{l}^{2}}}{2n}\]

    C) \[\lambda =\frac{2l}{n}\]                                             

    D) \[\lambda =2\ln \] (Here, n is a integer)

    Correct Answer: C

    Solution :

    If number of loops in string is n, then, \[l=\frac{n\lambda }{2}\]\[\Rightarrow \]\[\lambda =\frac{2l}{n}\]


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