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JCECE Medical JCECE Medical Solved Paper-2011

  • question_answer
    The latent heat of vaporisation of water is \[2240~J.\] If the work done in the process of vaporisation of 1 g is 168 J, then increases in internal energy is

    A)  2408 J          

    B)  2240 J

    C)  2072 J          

    D)  1904 J

    Correct Answer: C

    Solution :

     \[L=2240\,J,m=1\,g\] \[dW=168\,J\] \[dQ=mL=dU+dW\] \[1\times 2240=dU+168\] \[dU=2240-168\] \[=2072\,J\]


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