Physics-Heat Engines
NEET Physics Heat Engines MCQ Question
Type: MCQ-conceptual-Easy-Class 11
In a heat engine operating between two reservoirs, what is the net change in internal energy of the system after one complete cycle?
A
Zero
B
Equal to the work done
C
Equal to the heat absorbed
D
Equal to the heat rejected
Correct Answer
Option A
Detailed Explanation
According to the first law of thermodynamics, for a complete cycle of a heat engine, the change in internal energy (∆U) is zero because the system returns to its initial state.
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