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A copper and a steel wire of same diameter are connected end to end. A deforming force $F_1$ is applied to the wire which causes an elongation of $1 \mathrm{~cm}$. The two wires will have
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different strain
As Young's modulus $Y$ for two wires is different, hence strain is different but stress is same as equal force $F$ on each wire having same diameter and area of cross-section act on both wires.
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