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I am confused as it is written that sometimes it is true to say that heat given to a body can decrease its temperature.

Eagle
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Ram Mohan
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1 Answers1

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It is my understanding that heat capacity and specific heat can never be negative. Now, if the question was is it possible for a system to undergo a process in which heat is added and its temperature decreases, my answer would be yes. For this to happen, the work done by a closed system would need to exceed the heat added to the system so that it's internal energy decreases according to the first law

$$\Delta U=Q-W$$

and if a change in internal energy results in a temperature decrease. That would be the case if the system was an ideal gas, because for an ideal gas, any process

$$\Delta U=C_{v}\Delta T$$.

Hope this helps.

Bob D
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