Electromagnetic waves emitted from antenna are________________?
Correct answer: C. Transverse
- A. Stationary
- B. Longitudinal
- C. Transverse
- D. All the above
Explanation
Electromagnetic waves are transverse because their electric and magnetic fields oscillate perpendicular to the direction of propagation. The likely wrong choice is b, caused by confusing electromagnetic waves with sound waves, which are longitudinal in air.
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About Electromagnetic Waves
Electromagnetic waves consist of mutually perpendicular, oscillating electric and magnetic fields that also remain perpendicular to the direction of propagation. They travel through vacuum at the speed of light and include radio waves, microwaves, infrared, visible, ultraviolet, X-rays and gamma rays. Unlike mechanical waves, they do not require a material medium.
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