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How much energy stored will increase in a steel wire of 5m and $2mm^2$ cross sectional area when force on it increases to 300N from 50N?($Y_{Steel}=2\times 10^{11}N/m^2$)

$\begin{array}{1 1}(A)\;.54J\\(B)\;.32J\\(C)\;2.7J\\(D)\;.27J\end{array} $

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