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JEE Main Physics question

PhysicsMechanical Properties of SolidsJEE Main

A wire of length 2 m is made from of copper. A force is applied so that its length increases by 2 mm. Another wire of length 8 m is made from the same volume () of copper. If the force is applied to it, its length will increase by

Answer: (D)

Solution

Since the volume is fixed, , and $Δ

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Question ID VK-155082