Physics · Electromagnetic Waves
What is the speed of propagation for an electromagnetic wave in free space (vacuum)?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 19 × 108 m/s
- 23 × 108 m/s✓
- 31.5 × 108 m/s
- 43 × 107 m/s
Correct answer
3 × 108 m/s
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