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A 2m long rod  of diameter 2 mm is subjected to an axial pull of 1 kN. The  rod  is extended

by 0.5 cm. What is the approximate value of the modulus of elasticity of the material of the rod?

            (a) 127 G Pa                (b) 180 G Pa                (c) 125 G Pa                (d) 200 GPa

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