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NEET Sample Paper NEET Sample Test Paper-49

  • question_answer
    Two strings of copper are stretched to the same tension. If their cross-section area are in the ratio 1 : 4, then the respective wave velocities will be-

    A) 4 : 1                 

    B) 2 : 1  

    C) 1 : 2                             

    D) 1 : 4

    Correct Answer: B

    Solution :

    \[v=\sqrt{\frac{T}{\mu }}\,\,=\,\,\sqrt{\frac{T}{\rho A}}\] where, \[p\text{ }=\text{ }density\] \[A\text{ }=\text{ }Area\text{ }of\text{ }cross-section\] \[\mu \,\,=\,\,\rho A\,\,=\,\,mass\text{ }of\text{ }unit\text{ }length\]


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