Question:
Which of the following is correct for entropy change in a reversible process?
Which of the following is correct for entropy change in a reversible process?
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Reversible process → no entropy generation in universe.
Updated On: Jun 29, 2026
- $\Delta S_{system}+\Delta S_{surroundings}>0$
- $\Delta S_{system}<0$
- $\Delta S_{system}+\Delta S_{surroundings}=0$
- $\Delta S_{surroundings}=0$
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The Correct Option is C
Solution and Explanation
Concept:
For reversible processes:
\[
\Delta S_{universe}=0
\]
And:
\[
\Delta S_{universe}=\Delta S_{system}+\Delta S_{surroundings}
\]
Step 1: Apply reversible condition.
\[ \text{Reversible process} \Rightarrow \Delta S_{universe}=0 \]
Step 2: Substitute definition.
\[ \Delta S_{system}+\Delta S_{surroundings}=0 \] Final Answer: \[ \boxed{0} \]
Step 1: Apply reversible condition.
\[ \text{Reversible process} \Rightarrow \Delta S_{universe}=0 \]
Step 2: Substitute definition.
\[ \Delta S_{system}+\Delta S_{surroundings}=0 \] Final Answer: \[ \boxed{0} \]
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