JEE Main & Advanced Sample Paper JEE Main Sample Paper-24

  • question_answer
    Second law of thermodynamics is equivalent to :

    A)  In general no engine has a efficiency of 100%

    B)  Random motion cannot be completely ordered 

    C)  Heat cannot be fully converted into work

    D)  All the above.

    Correct Answer: D

    Solution :

    By carnot theorem, no engine can have more efficient then Carnot engine. Entropy cannot be decreased. Second law's states that ideal heat engine is not possible.


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