SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If two objects labelled B and C are both at thermal equilibrium with object A, which of the following must be true?
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Objects B and C are in thermal equilibrium with each other.
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Object B has a higher temperature than object C.
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Object C has a higher temperature than object B.
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Objects B and C are not in thermal equilibrium with each other.
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Explanation:
Detailed explanation-1: -Two objects can only be at thermal equilibrium when the temperatures of both the objects are same. If A and B are in thermal equilibrium with C then A and C also have the same temperature.
Detailed explanation-2: -If two systems are in thermal equilibrium, then they should have same temperature.
Detailed explanation-3: -In other words, if two objects are in thermal equilibrium, they have the same temperature. Figure 1.2 If thermometer A is in thermal equilibrium with object B, and B is in thermal equilibrium with C, then A is in thermal equilibrium with C.
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