Question

Which of the following quantity determines the direction of flow of heat?

• A. Difference in pressure between the two bodies
• B. Difference in temperature between the two bodies
• C. Difference in volume between the two bodies
• D. None of these

Answer 1

The correct option is B

Difference in temperature between the two bodies

When two bodies at different temperatures are kept in contact, heat flows from the body at a higher temperature to the body at a lower temperature. Thus, it is the temperature which determines the direction of flow of heat.