GCEPhysicsHeat and Thermodynamics2024

Which of the following statements correctly describes the zeroth law of thermodynamics?

AEnergy can neither be created nor destroyed but can be converted from one form to another.
BIf two bodies are each in thermal equilibrium with a third body, they are in thermal equilibrium with each other.CORRECT
CHeat flows spontaneously from a body at higher temperature to a body at lower temperature.
DThe entropy of a perfect crystal at absolute zero temperature is zero.
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Why the answer is B, and why the others tempt you.
The zeroth law of thermodynamics states that if body A is in thermal equilibrium with body C, and body B is also in thermal equilibrium with body C, then A and B are in thermal equilibrium with each other. This law forms the basis for the concept of temperature measurement. Options A, C, and D describe the first, second, and third laws of thermodynamics respectively.
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