Entropy Change
Easyphysics
Entropy change in reversible process is:
Select the correct option:
Solution
Incorrect! Answer:
dQrev/T
Entropy (S) is a thermodynamic property that measures the degree of disorder in a system.
- For an internally reversible process, the differential change in entropy is defined as: dS=TdQrev where dQrev is the heat transfer at absolute temperature T.
- For an adiabatic reversible process (isentropic), ΔS=0.
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About This Question
- Subject
- physics
- Chapter
- thermodynamics
- Topic
- entropy change
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
dQrev/T
Entropy (S) is a thermodynamic property that measures the degree of disorder in a system.
- For an internally reversible process, the differential change in entropy is defined as: dS=TdQrev where dQrev is the heat transfer at absolute temperature T.
- For an adiabatic reversible process (isentropic), ΔS=0.
This easy difficulty physics question is from the chapter thermodynamics, covering the topic of entropy change. It appeared in the 2025 exam.
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