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JCECE Engineering JCECE Engineering Solved Paper-2015

  • question_answer
    Consider two identical iron spheres \[P\] and\[Q\], one which lie on a thermally insulating plate, while the other hangs from an insulated thread. Equal amount of heat \[(\Delta Q)\] is supplied to the two spheres. Then,

    A)  the temperature of Q will be greater than P

    B)  the temperature of P will be greater than Q

    C)  their temperature will be equal

    D)   can't be predicted

    Correct Answer: B

    Solution :

    Heat transferred between two bodies depends upon the common area of contact between the two bodies. In case of \[Q\] area of contact is more. Thus, heat transferred for \[Q\] is more. Thus, temperature of \[Q\] is lesser than P for same amount of heat gain.


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