Question

Three bodies $A,B$ and $C$ are in thermal equilibrium.
The temperature of $B$ is ${45}^{\circ }C$. Then the temperature of ${}^{\prime }{C}^{\prime }$ is _____

• A. ${45}^{\circ }C$
• B. ${50}^{\circ }C$
• C. ${40}^{\circ }C$
• D. Any temperature

Answer 1

The correct option is A ${45}^{\circ }C$

A, B and C are in thermal equilibrium and B is at temperature ${45}^{0}C$, then according to zeroth law of thermodynamics both A and C will also be at temperature ${45}^{0}C$.