Q111. What is the speed of light in vacuum (approximately)?
- 150,000 km/s
- 3,000 km/s
- 300,000 km/s
- 30,000 km/s
Show answer and explanation
Correct answer: C. 300,000 km/s
Light travels at about 299,792 km/s.
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Correct answer: C. 300,000 km/s
Light travels at about 299,792 km/s.
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