Which of the following concepts is a method of heat transfer that does not require a material medium?
A
Conduction
B
Diffusion
C
Convection
D
Radiation
Verified Correct Answer: D.
Physical Principles & Numerical Solution
Radiation is energy that comes from a source and travels through space and may be able to penetrate various materials.
Light, radio, and microwaves are good examples
Source: WAEC / JAMB / NECO Classroom Archive (Record #63399)