# Two Bodies at Different Temperatures Are Mixed in a Calorimeter. Which of the Following Quantities Remains Conserved? - Physics

MCQ

Two bodies at different temperatures are mixed in a calorimeter. Which of the following quantities remains conserved?

#### Options

• Sum of the temperatures of the two bodies

• Total heat of the two bodies

• Total internal energy of the two bodies

• Internal energy of each body

#### Solution

Total internal energy of the two bodies

When two bodies at different temperatures are mixed in the calorimeter, heat flows from one body to the other due to the temperature difference. This results in change in the internal energy of the individual bodies. There is no exchange of heat with the surrounding in the calorimeter. Thus, the total internal energy of the bodies remain conserved as no external work is done on them.

Concept: Temperature and Heat
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#### APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 3 Calorimetry
MCQ | Q 6 | Page 46