The electromagnetic waves travel in free space with the speed of _:
Correct answer: A. Light
- A. Light
- B. Strength
- C. Sound
- D. None of these
Explanation
Electromagnetic waves travel in free space (like a vacuum) at the speed of light, denoted by the symbol "c." In a vacuum, electromagnetic waves propagate at approximately 299,792,458 (3×10⁸) meters per second, which is the universally constant speed of light.
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