System A is in thermal equilibrium with B and B is separately in thermal equilibrium with C. Then A and C are in thermal equilibrium, from which law of thermodynamics it follows?
A
Zeroth
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B
First
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C
Second
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D
Third
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Solution
The correct option is C Zeroth Here, the ZerothLawofThermodynamics is followed by the three systems A, B and C. Given that system A is in thermal equilibrium with system B and at the same time in equilibrium with C. Hence, they are in thermal equilibrium with each other.