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Question
A sample of a metal is tested in tension, and it is found that there is a strain of 0.0080 at a corresponding stress of 450 N/mm2. On the removal of the load a permanent strain of 0.0015 is found to be present. The value of modulus of elasticity for the metal
A.
1.44 × 105 N/mm2
B.
1.77 × 105 N/mm2
C.
0.692 × 105 N/mm2
D.
0.30 × 105 N/mm2
Answer ( Option C)

0.692 × 105 N/mm2

Solution

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