Assertion :Two bodies at different temperatures, if brought in thermal contact do not necessary settle to the mean temperature. Reason: The two bodies may have different thermal capacities.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
When two bodies at temperature $T_{1}$ and $T_{2}$ are brought in thermal contact, they do settle to the mean temperature $(T_{1} + T_{2}) / 2$ . The will do so, in case the two bodies were of same mass and material i.e, same thermal capacities. In other words, the two bodies may be having different thermal capacities, that's why they do not settle to the mean temperature, when brought together.

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