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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2011

  • question_answer
        The Youngs modulus of the material of a wire is\[6\times {{10}^{12}}N/{{m}^{2}}\]and there is no transverse Strain in it, then its modulus of rigidity will be

    A)  \[3\times {{10}^{12}}N{{m}^{-2}}\]        

    B)  \[2\times {{10}^{12}}N{{m}^{-2}}\]

    C)  \[{{10}^{12}}N{{m}^{-2}}\]         

    D)  None of these

    Correct Answer: A

    Solution :

                    \[Y=2\eta (1+\sigma )\]For no transverse strain \[(\sigma =0)\]\[Y=2\eta \Rightarrow n=\frac{Y}{2}=3\times {{10}^{12}}N/{{m}^{2}}\]


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