A uniform steel wire of length 4m and area of cross-section 3 10-6m2 i – McqOptions

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1.	A uniform steel wire of length 4m and area of cross-section 3 10-6m2 is extended by 1mm by the application of a force. If the youngs modulus of steel is 2 1011 Nm-2 the energy stored in the wire is
A.	0.025J
B.	0.50J
C.	0.75J
D.	0.100J
Answer» D. 0.100J

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