2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Thermodynamical Processes

JEE Main & Advanced Physics Thermodynamical Processes Question Bank Heat Engine Refrigerator and Second Law of Thermodynamics

  • question_answer
    In a mechanical refrigerator, the low temperature coils are at a temperature of ? 23°C and the compressed gas in the condenser has a temperature of 27°C. The theoretical coefficient of performance is                                        [UPSEAT 2001]

    A)            5    

    B)             8

    C)            6    

    D)             6.5

    Correct Answer: A

    Solution :

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


You need to login to perform this action.
You will be redirected in 3 sec spinner