NEET2017Physics-Thermodynamics
NEET 2017 Physics Carnot Engine MCQ Question
Type: MCQ-numerical-Medium-Class 11
A Carnot engine having an efficiency of 1/10 as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is:
A
1 J
B
90 J
C
99 J
D
100 J
Correct Answer
Option B
Detailed Explanation
The efficiency η = 1/10, so the work done W = 10 J. The heat absorbed Q_c = W/η = 10 J / (1/10) = 100 J. The energy absorbed is 99 J.
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