Physics-Heat Engines
NEET Physics Heat Engines MCQ Question
Type: MCQ-diagram based-Medium-Class 11
Refer to the diagram of a heat engine cycle. If the heat absorbed by the system is measured as q = 50 kJ, and the internal energy change ΔU is 30 kJ, what is the work done by the system?
A
20 kJ
B
80 kJ
C
50 kJ
D
30 kJ
Correct Answer
Option A
Detailed Explanation
According to the first law of thermodynamics, ΔU = q - W, where W is the work done. Thus, W = q - ΔU = 50 kJ - 30 kJ = 20 kJ.
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