STANDARDPhysics-Thermodynamics
STANDARD Physics Entropy and Irreversibility MCQ Question
Type: MCQ-conceptual-Medium-Class 11
For irreversible expansion of an ideal gas under isothermal condition, the correct option is
A
U ≠ 0, ΔSₜₒₜₐₗ = 0
B
U = 0, ΔSₜₒₜₐₗ = 0
C
U ≠ 0, ΔSₜₒₜₐₗ ≠ 0
D
U = 0, ΔSₜₒₜₐₗ ≠ 0
Correct Answer
Option D
Detailed Explanation
In an isothermal process, the internal energy change (ΔU) is zero. However, for an irreversible process, the total entropy change (ΔSₜₒₜₐₗ) is not zero due to the generation of entropy.
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