A process can only be reversible if every step keeps the system at equilibrium. That requirement is:
AQuasi static
BQuasi stellar
CQuasi solid
DQuasi sonic
Answer & Solution
Correct answer: A. Quasi static
1. The system must never be far from balance.
2. Each step happens very slowly.
3. That requirement is quasi static.
_Source: OpenStax University Physics Volume 2, Chapter 4, The Second Law of Thermodynamics._
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