Correct option is A
The correct answer is (A) Conduction, Convection and Radiation
Explanation:
Heat transfer is the process by which thermal energy moves from a region of higher temperature to a region of lower temperature. There are three fundamental modes of heat transfer:
Conduction: Transfer of heat through a solid medium without the movement of particles.
Example: Heating of a metal rod from one end.Convection: Transfer of heat through the actual movement of fluids (liquids or gases).
Example: Boiling water, sea breeze.Radiation: Transfer of heat in the form of electromagnetic waves, which does not require any medium.
Example: Heat received from the Sun.
Thus, Conduction, Convection, and Radiation together constitute the three modes of heat transfer.
Information Booster:
Conduction is most effective in metals due to free electrons.
Convection currents occur due to density differences in fluids.
Radiation can occur even in a vacuum.
All objects above absolute zero emit thermal radiation.
