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

Question

A system undergoes a reversible adiabatic process. The entropy of the system (A) Remains constant (B) May increase or may decrease (C) Increases (D) Decreases

Tardigrade Admin · Accepted Answer

In general, the temperature of the system may change during a process. If the process is reversible, the change in entropy is defined as

S_{f} - S_{i} = \int_{i}^{f} \frac{Δ Q}{T}

In an adiabatic reversible process, no heat is given to the system. Therefore, entropy of the system remains constant.

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

Remains constant

May increase or may decrease

Increases

Decreases

In general, the temperature of the system may change during a process. If the process is reversible, the change in entropy is defined as Sf​−Si​=∫if​TΔQ​ In an adiabatic reversible process, no heat is given to the system. Therefore, entropy of the system remains constant.