Question

The coefficient of performance of a Carnot refrigerator working between and is

• A. 10
• B. 1
• C. 9
• D. 0

Answer 1

Answer: (C)

9

Answer 2

Coefficient of performance

$K = \frac { T _ { 2 } } { T _ { 1 } - T _ { 2 } } = \frac { 273 } { 303 - 273 } = \frac { 273 } { 30 } = 9$