The coefficient of performance of a Carnot refrigerator working between 30^{0}Cand 0^{0}C is

  • Option 1)

    10

  • Option 2)

    1

  • Option 3)

    0

  • Option 4)

    9

 

Answers (1)

As we learnt in 

Coefficient of performance (?) -

\beta = \frac{Q_{2}}{Q_{1}-Q_{2}}= \frac{T_{2}}{T_{1}-T_{2}}
 

- wherein

T_{1}> T_{2}

For a perfect refrigerator \beta \rightarrow \infty

 

   Coefficient of performance= \frac{T_2}{T_1-T_2}=\frac{273}{303-273}=\frac{273}{30}=9.1


Option 1)

10

Incorrect

Option 2)

1

Incorrect

Option 3)

0

Incorrect

Option 4)

9

Correct

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