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Manipal Engineering Manipal Engineering Solved Paper-2012

  • question_answer
    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

    A)  the same stress and strain

    B)  the same stress but different strains

    C)  the same strain but different stresses

    D)  different stresses and strains

    Correct Answer: A

    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.


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