A refrigerator is to maintain eatables kept inside at 9°C. If room temperature is 36° C, calculate the coefficient of performance. | Learn NCERT solution | Education portal Class 11 Physics | Study online Unit-12 Thermodynamics



Q.10:- A refrigerator is to maintain eatables kept inside at 9°C. If room temperature is 36° C, calculate the coefficient of performance.

 

 

Answer:-



Temperature inside the refrigerator, T1 = 9°C = 282 K
Room temperature, T2 = 36°C = 309 K
Coefficient of performance = T1 / (T2 – T1)
= 282 / (309 – 282)
= 10.44
Therefore, the coefficient of performance of the given refrigerator is 10.44.