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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.
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- A monoatomic gas is suddenly compressed to (1/8)th of its initial volume adiabatically.
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Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An object is placed at a distance of 10 cm from a co-axial combination of two lenses
- A monoatomic gas is suddenly compressed to (1/8)th of its initial volume adiabatically.
- Two 220V – 100W bulbs are connected first in series and then in parallel.
- For a thermocouple, the neutral temperature is 270⁰C when its cold junction is at 20⁰C.
- A galvanometer acting as a voltmeter will have
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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