MCQ
A given system undergoes a change in which work done by the system equals the decrease in its internal energy. The system must have undergone:
- AIsothermal change.
- ✓Adiabatic change.
- CIsobaric change.
- DIsochoric change.
✓
Answer
Correct option: B.
Adiabatic change.
When a gas expands suddenly, $($adiabatic change$)$ work is done by the gas. Therefore, internal energy of the system decreases.
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