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JEE Main & Advanced Physics Elasticity Question Bank Youngs Modulus and Breaking Stress

  • question_answer
    There is no change in the volume of a wire due to change in its length on stretching. The Poisson's ratio of the material of the wire is                          [MH CET 2004]

    A) + 0.50

    B)             ? 0.50

    C)             0.25    

    D)             ? 0.25

    Correct Answer: B

    Solution :

                     We know that \[\frac{dV}{V}=(1+2\sigma )\frac{dL}{L}\] If \[\sigma =-\frac{1}{2}\] then \[\frac{dV}{V}=0\] i.e. there is no change in volume.


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