With increase in temperature, the internal energy of a substance___________________?
Correct answer: D. Increases
- A. May increase or decrease; depends on the substance
- B. Decreases
- C. Remains unchanged
- D. Increases
Explanation
The temperature dependence of internal energy is governed by heat capacity, dU = Cv dT at constant volume, and Cv is normally positive. Hence increasing temperature increases internal energy.
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