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If some heat is provided to a system and work is done on it, it is possible that internal energy will decrease. True or False?

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in Physics – Class 11 by (74.2k points)
If some heat is provided to a system and work is done on it, it is possible that internal energy will decrease. True or False?

(a) True

(b) False

The question was asked in class test.

I'm obligated to ask this question of Thermodynamics in chapter Thermodynamics of Physics – Class 11

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Correct answer is (b) False

Explanation: Internal energy corresponds to the mechanical energy of the molecules. When these molecules are provided with heat and are compressed their mechanical energy will increase. Both factors support the increase of internal energy hence the given statement is false.

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