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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the same stress and strain

the same stress but different strains

the same strain but different stresses

different stresses and strains

answer is B.

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Detailed Solution

e = e1+e2as A1=A2Force on both the wires is sameFA1=FA2

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