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JEE Main Physics question

PhysicsMechanical Properties of SolidsJEE Main

A copper wire and a steel wire of the same diameter and length are connected end to end, and a force is applied, which stretches their combined length by 1 cm. The two wires will have [MP PMT 1992]

Answer: (D)

Solution

Joined in series, both wires carry the same force and (having the same diameter) have the same cross-sectional area, so

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Question ID VK-155088