Which of the following is true in case of mode of transmission of heat?

Options

A. Convection is possible only in case of liquids and gases.
B. Radiation is the fastest mode of heat transfer.
C. Conduction is possible only in case of solids
D. All of the above

Answer

D

Explanation

The molecules of a solid are held strongly due to
strong intermolecular forces. As these molecules cannot travel to the source of heat energy, therefore, convection is not possible in case of solids, but trans formation of heat takes place from one molecule to another molecule which is side by it, i.e., conduction takes place.
Radiation is the fastest mode of heat transfer from hot body to cold body.