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A bar produces a lateral strain of magnitudes $60\times 10^{-5}$m/m when subjected to a tensile stress of magnitude 300 MPa along the axial direction. What is the elastic modulus of the material if the Poisson’s ratio is 0.3 ?                      

         (a) 200 GPa                    (b) 150 GPa

         (c) 125 GPa                    (d) 100 GPa

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