Question

THE COEFFICIENT OF PERFORMANCE OF A CARNOT REFRIGERATOR IS 9. IF THE HEAT EXTRACTED FROM ITS SINK IS 900J, THEN HEAT TRANSFERRED TO SOURCE WILL BE
A) 100J
B)1000J
C)900J
D)8100J

Answer 1

Answer:

Here's ur answer

Explanation:

Option (C) 900J

Answer 2

Given: coefficient of performance is $9$. $900J$ of heat is extracted from its sink.

To find: heat transferred to source.

Explanation:

Step by step method:

Step 1 of 2

Work done per cycle is calculated by using the formula:

$W=\frac{Q_{2} }{K} \\W=\frac{900}{9} \\W=100J$

Step 2 of 2

The heat transferred to source will be calculated by:

$Q_{1} =Q_{2} +W\\Q_{1} =900+100\\Q_{1} =1000J$

Final answer:

$1000J$ of heat is transferred to source. Therefore, option B) is correct.