NEET Physics Entropy MCQ Question
Which of the following combinations regarding the changes in internal energy and entropy during a process are correct?
1 and 2
1 and 3
2 and 4
3 and 4
Correct Answer
Detailed Explanation
For an ideal gas, the change in internal energy (∆U) is zero during isothermal processes, irrespective of whether the process is reversible or irreversible. However, the total change in entropy (∆S total) is not zero for irreversible processes, indicating that options 1 and 2 correctly reflect the relationships presented in the NCERT context.
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