Question

The zeroth law of thermodynamics for three systems $A,B$ and $C$ in contact demands that

• A. A and B are in thermal equilibrium
• B. B and C are in thermal equilibrium
• C. A and C are in thermal equilibrium
• D. A B and C are in thermal equilibrium

Answer 1

Answer: (A)

From zeroth law of thermodynamics, if two systems $A$ and $B$ are separated by an adiabatic wall, are seperately and independently in thermal equilibrium with a third system $C$, then the systems $A$ and. $B$ are also in a state of thermal equilibrium with each other.