Entropy Hard
Entropy of isolated system during real (irreversible) process:
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About This Question
- Subject
- physics
- Chapter
- thermodynamics
- Topic
- entropy hard
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
Increases
The Principle of Increase of Entropy states that for any real, spontaneous (irreversible) process in an isolated system, the total entropy always increases. ΔStotal>0
- For an ideal, reversible process, ΔStotal=0.
- Entropy never decreases in an isolated system. This gives 'time' a direction, as processes always move towards states of higher entropy (and thus higher probability/disorder).
This hard difficulty physics question is from the chapter thermodynamics, covering the topic of entropy hard. It appeared in the 2025 exam.
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