Which of the following waves requires a material medium for its propagation?
A
Radio waves
B
Light waves
C
Sound waves
D
X-rays
Verified Correct Answer: C.
Physical Principles & Numerical Solution
- Electromagnetic waves are waves that have no medium to travel whereas mechanical waves need a medium for its transmission.
- sound wave is an example of a mechanical wave. Sound waves are incapable of traveling through a vacuum.
Source: Myschool Past Questions Archive (Record #59369)