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JEE Main & Advanced Physics Kinetic Theory of Gases Question Bank Mock Test - Kinetic Theory of Gases and Laws of Thermodynamics

  • question_answer
    In a mechanical refrigerator, the low temperature coils are at a temperature of \[-23{}^\circ C\] and the compressed gas in the condenser has a temperature of\[27{}^\circ C\]. The theoretical coefficient of performance is

    A) 5                     

    B) 8      

    C) 6                    

    D) 6.5

    Correct Answer: A

    Solution :

    [a] Coefficient of performance \[K=\frac{{{T}_{2}}}{{{T}_{1}}-{{T}_{2}}}\] \[=\frac{(273-23)}{(273+27)-(273-23)}=\frac{250}{300-250}=\frac{250}{20}=5\]


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