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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 36

  • question_answer
    Two carnote engines A and B have their sources at 1000 K and 1100 K and their sinks are at 400 K and 500 K respectively. If \[{{\eta }_{A}}\] and \[{{\eta }_{B}}\] are their efficiencies,

    A) \[{{\eta }_{A}}<{{\eta }_{B}}\]           

    B)        \[{{\eta }_{A}}={{\eta }_{B}}\]

    C) \[{{\eta }_{A}}>{{\eta }_{B}}\]        

    D)        Data is insufficient.

    Correct Answer: C

    Solution :

    [c] \[{{\eta }_{A}}=1-\frac{400}{1000}=.60\] \[{{\eta }_{B}}=1-\frac{500}{1100}=.545\] \[\therefore {{\eta }_{A}}>{{\eta }_{B}}\]          


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