Physics-Heat Engines
NEET Physics Heat Engines MCQ Question
Type: MCQ-fact-Medium-Class 11
What is the relationship between change in internal energy (∆U) and heat (q) and work (w) as per the first law of thermodynamics?
A
∆U = q + w
B
∆U = q - w
C
∆U = q × w
D
∆U = q / w
Correct Answer
Option A
Detailed Explanation
The first law of thermodynamics states that the change in internal energy (∆U) of a system is equal to the heat added to the system (q) plus the work done on the system (w). This relationship is fundamental to thermodynamics.
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