Which of the following is an example of a longitudinal wave?
A. Sound waves in air
B. Radio waves
C. Light waves
D. Water waves on the surface
Answer: Option A
Solution (By JKSSB Mock Tests)
In a longitudinal wave, the particles of the medium vibrate back and forth parallel to the direction of wave propagation (creating compressions and rarefactions). Sound waves traveling through air are mechanical longitudinal waves. Light and radio waves are transverse electromagnetic waves, while surface water waves are a combination of both.
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