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WBJEE 2018 Physics Solved Paper

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Question : 4

Total: 39

The stress along the length of a rod (with rectangular cross section) is 1% of the Young's modulus of itsmaterial. What is the approximate percentage of change of its volume ? (Poisson's ratio of the materialof the rod is 0.3)

3%
1%
0.7%
0.4%

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