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JEE Main Physics question

PhysicsMechanical Properties of SolidsJEE Main

A uniform metal rod of cross-section is heated from to . The coefficient of linear expansion of the rod is . Its Young's modulus of elasticity is . The energy stored per unit volume of the rod is [Guj CET 2004]

Answer: (D)

Solution

Being rigidly constrained, the rod develops a thermal strain 10^{-6}$×20 =

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Question ID VK-154869