A system undergoes a reversible adiabatic process.The entropy change of the system is

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In a reversible adiabatic process, there is no heat exchange with the surroundings and the system is perfectly insulated. Therefore, the entropy change of the system is zero (i.e., ΔS=0). This is because entropy is a measure of the system's disorder, and in a reversible process, the system returns to its initial state, implying that there is no change in its disorder.

A System Undergoes a Reversible Adiabatic Process Δ\DeltaΔ S < 0 B)

A System Undergoes a Reversible Adiabatic Process $\Delta$ S < 0
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