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The cofficient of performance of a refri...

The cofficient of performance of a refrigerator is 5. If the temperature inside freezer is `-20^(@)C`, the temperature of the surroundings to which it rejects heat is :

A

21°C

B

31°C

C

41°C

D

11°C

Text Solution

Verified by Experts

The correct Answer is:
B
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MOTION-Thermodynamics-EXERCISE - 3 SECTION - A
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  4. A monatomic gas at a pressure P, having a volume V expands isothermall...

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  5. Assertion : For gas atom the number of degrees of freedom is 3. R...

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  9. The cofficient of performance of a refrigerator is 5. If the temperatu...

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  10. An ideal gas is compressed to half its initial volume by means of seve...

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  11. A Carnot engine, having an efficiency of eta= 1/10 as heat engine, is ...

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  12. One mole of an ideal diatomic gas undergoes a transition from A to B a...

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  14. A refrigerator works between 4^(@)C and 30^(@)C. It is required to rem...

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  15. A gas is compressed isothermally to half its initial volume. The same ...

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  16. Thermodynamic processes are indicated in the following diagram. M...

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  17. A Carnot engine, having an efficiency of eta= 1/10 as heat engine, is ...

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  18. The volume (V) of a monatomic gas varies with its temperature (T) as s...

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  19. The efficiency of an ideal heat engine working between the freezing po...

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  20. A sample of 0.1 g of water at 100 and normal pressure (1.013 xx10^(5)...

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