A rod of length 20 mm is stretched to make a rod of length 40 mm. Subs – McqOptions

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1.	A rod of length 20 mm is stretched to make a rod of length 40 mm. Subsequently, it is compressed to make a rod of final length 10 mm. Consider the longitudinal tensile strain as positive and compressive strain as negative. The total true longitudinal strain in the rod is
A.	-0.5
B.	– 0.69
C.	– 0.75
D.	– 1.0
Answer» C. – 0.75

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