Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young's modulus, G = Modulus of rigidity or shear modulus v = Poisson's ratio)?

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  1. E = 2G (1 + v)
  2. E = G (1 + v)
  3. E = G (1 + v)/2
  4. E = 2G (1 + 2v)

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Answer: Option 1

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