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JEE Main Physics question

PhysicsMechanical Properties of SolidsJEE Main

A copper wire and steel wire of the same diameter and of lengths 100 cm and 200 cm respectively are connected end to end and a force is applied, which stretches their combined length by 1.2 cm. Find by what amount (in cm) the copper wire is elongated, if Young's modulus for copper and steel are and respectively.

Answer: 0.55

Solution

With the same force and area in series, . .

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Question ID VK-155208