Physics · Light and Optics
What is the approximate speed of light in a vacuum?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 13 × 10 8 inch/s
- 23 × 10 8 km/s
- 33 × 10 8 cm/s
- 43 × 10 8 m/s✓
Correct answer
3 × 10 8 m/s
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