A steel rod 1 metre long having square cross section is pulled under a – McqOptions

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1.	A steel rod 1 metre long having square cross section is pulled under a tensile load of 8 tonnes. The extension in the rod was 1 mm only. If E_steel = 2 x 10⁶ kg/cm², the side of the rod, is
A.	1 cm
B.	1.5 cm
C.	2 cm
D.	2.5 cm
Answer» D. 2.5 cm

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