Question

A body A at a higher temperature is brought into contact with another body B at a lower temperature. Which of the following is/are true?

• A. Atoms of body A will become less active.
• B. Atoms of body B will become less active.
• C. Body A will gain heat energy.
• D. Body B will gain heat energy.

Answer 1

Answer: (A), (D)

Body B will gain heat energy.

• Heat is transferred from body A to body B. So, the temperature of body A decreases and that of body B increases.
• The activity of atoms in a body depends on its temperature. Hence, the activity in body A decreases and that in body B increases.