A) \[24\times {{10}^{11}}\]
B) \[8.0\times {{10}^{11}}\]
C) \[10\times {{10}^{11}}\]
D) \[2.0\times {{10}^{11}}\]
Correct Answer: D
Solution :
Young?s modulus is defined only in elastic region and \[Y=\frac{\text{Stress}}{\text{Strain}}=\,\frac{8\times {{10}^{7}}}{4\times {{10}^{-4}}}=2\times {{10}^{11}}\,\,N/{{m}^{2}}\]
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