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J & K CET Medical J & K - CET Medical Solved Paper-2008

  • question_answer
    The frequency of the fundamental note in a wire stretched under tension T is f. If the tension is increased to 25 T, then the frequency of the fundamental note will be

    A)  25f                                        

    B)  5f

    C)  10f                                        

    D)  f

    Correct Answer: B

    Solution :

                     The fundamental frequency \[f=\frac{1}{2L}\sqrt{\frac{T}{m}}\] \[\therefore \]  \[\frac{f}{f}=\sqrt{\frac{T}{T}}=\sqrt{\frac{25T}{T}}=5\]or  \[f=5f\]


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