Question: A cube is subjected to three mutually perpendicular tensile stresses ( ) , the volumetric strain be [E= Young's modulus of elasticity, = Poisson's ratio]

A cube is subjected to three mutually perpendicular tensile stresses (σ), the volumetric strain be [E= Young's modulus of elasticity, υ= Poisson's ratio]

(A) 3σ/E(1-2υ)

(B) 3σ/E(2υ-1)

(c) E/3σ (1-2υ)

(D) none of these

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