alleryStart learning →What does entropy measure in a physical system?
AThe disorder of the system
BThe total mass of the system
CLight speed within the system
DThe electrical charge in it
Answer & Solution
Correct answer: A. The disorder of the system
1. Entropy is described directly as a measure of the disorder of a system.
2. It is also connected to how much of a system's energy is unavailable to do work.
3. Mass, the speed of light, and electrical charge are unrelated physical quantities, not what entropy measures.
4. So disorder is correct.
_Source: OpenStax Physics (CC BY 4.0), Ch 12 "Thermodynamics", section 12.3 Second Law of Thermodynamics: Entropy_
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