Question

Conduction of heat is possible:

• A. when the bodies are apart from each other
• B. when the bodies have same temperature and in thermal contact
• C. when they have different temperatures maintaining distance between them
• D. when bodies should be in contact and should have different temperatures

Answer 1

The correct option is D when bodies should be in contact and should have different temperatures

Conduction is only possible when the bodies in contact have a temperature difference; heat flows from the body with higher temperature to that of lower temperature, till the bodies are in thermal equilibrium.