Question

The coefficient of performance of a refrigerator is 5. If the
inside temperature of freezer is –20°C, then the temperature
of the surroundings to which it rejects heat is [2015 RS]
(a) 41°C (b) 11°C
(c) 21°C (d) 31°C

Answer 1

Answer:

Heyya here's ur ans

5= heat abs/work done

5= T(fr) / T(surr) - T(fr)

5= 253K / T - 253

5T - 1265 = 253

5T = 1518

T = 303.6K or 30.6°C..this is ur ans

Answer 2

Explanation:

we solve the problem my friend for you