Question

Select the correct statement.

(a) Radiation doesn’t require any medium

(b) Convection involves heat transfer by vibration of particles at their position

(c) Conduction involves movement of particles to transfer heat

(d) Radiation is responsible for heat of gas flame heating the cooking pan

The question was posed to me in quiz.

This interesting question is from Thermal Properties of Matter topic in portion Thermal Properties of Matter of Physics – Class 11

Answer 1

The correct choice is (a) Radiation doesn’t require any medium

The explanation: Radiation doesn’t require any medium for transfer of heat. When a cooking pan is heated over a gas stove, conduction is the process responsible for transfer of heat from flame to pan. Radiation involves electromagnetic waves transferring energy called radiant energy.