What type of wave is primarily used in radio communication?

• A. Longitudinal waves
• B. Transverse waves
• C. Surface waves
• D. Standing waves

Answer: (B)

Radio communication primarily relies on transverse waves, specifically electromagnetic waves. In the context of radio transmission, these waves propagate through space and can travel long distances. Transverse waves are characterized by the motion of the medium being perpendicular to the direction of the wave's travel, which is the case for electromagnetic waves. For radio frequencies, the oscillating electric and magnetic fields are oriented perpendicular to one another and to the direction in which the wave travels.

This property allows for effective transmission and reception of radio signals. Understanding this aspect of wave propagation is crucial for operating radio equipment and for grasping how radio waves can carry information over vast distances, making them integral to efficient communication systems.