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21. The Young's modulus of the material of a wire is 1.1 x 1011 N/mp. If the wire undergoes a longitudinalstrain of 0.1%, then the energy stored per unil volume is(a) 5.5 x 103) (b) 5.5 x 10*(©) 11 x 10"] (d) 11 x 10 |
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