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The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is -20⁰C, the temperature of the surroundings to which it rejects heat is
Options
(a) 11⁰C
(b) 21⁰C
(c) 31⁰C
(d) 41⁰C
Correct Answer:
31⁰C
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
Related Questions: - Pure Si at 500 K has equal number of electron (nₑ) and hole (nₕ) concentrations
- A magnetic needle suspended parallel to a magnetic field requires √3J of work
- In an AC generator, a coil with N turns, all of the same area A and total resistance R,
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Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Pure Si at 500 K has equal number of electron (nₑ) and hole (nₕ) concentrations
- A magnetic needle suspended parallel to a magnetic field requires √3J of work
- In an AC generator, a coil with N turns, all of the same area A and total resistance R,
- Large transformers, when used for some time, become hot and are cooled by circulating
- Angle of contact of a liquid with a solid depends on
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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