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  4. A copper wire and a steel wire of the same diameter and length are joined end to end and a force is applied which stretches their combined length by 1 cm. Then the two wires will have

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Q. A copper wire and a steel wire of the same diameter and length are joined end to end and a force is applied which stretches their combined length by $1 \,cm$. Then the two wires will have

ManipalManipal 2008Mechanical Properties of Solids

Solution:

As same force is applied to each wire having equal area of cross-section, so stress is same but extensions will be different for wires of different materials. So, same stress but different strains are there.