Question

The primary mode of heat transfer in solids is:

• A. Conduction
• B. Convection
• C. Radiation
• D. All modes equally

Hint:

In solids, conduction is the primary method of heat transfer due to the close proximity of atoms, allowing for efficient energy transfer through vibrations.

Answer 1

The Correct Option is A

In solids, heat transfer primarily occurs through conduction, as the particles are closely packed and can transfer kinetic energy to adjacent particles through direct collisions. This process is more efficient in solids than in liquids or gases due to the high density and the strong intermolecular interactions.
- Conduction: Heat flows from the hot region to the cold region due to the vibration of particles. This is the most important mode of heat transfer in solid materials.
- Convection: This occurs in fluids (liquids and gases) where the fluid itself moves, transferring heat from one place to another.
- Radiation: This occurs through electromagnetic waves and does not require a medium, hence it occurs in all states of matter, including vacuum.
Therefore, the correct answer is: Conduction.