General Science • PhysicsEasy
Which type of wave requires no material medium for propagation and can travel through a vacuum at the speed of light?
A. Mechanical wave
B. Sound wave
C. Electromagnetic wave✓ Correct Answer
D. Seismic wave
💡 Solution & Explanation
Electromagnetic waves consist of mutually perpendicular oscillating electric and magnetic fields that propagate independently of any physical medium. Mechanical waves require material particles for transmission, making them incapable of traveling through a vacuum. Light and radio waves belong to the electromagnetic spectrum.
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