What is the speed of light in a vacuum approximately equal to?
A3 × 10^10 meters per second
B3 × 10^8 meters per second
C3 × 10^6 meters per second
D3 × 10^5 meters per second
Explanation
Light travels at approximately 3 × 10^8 m/s (approx 300,000 km/s) in a vacuum.
Exam Relevance
- Topic: Physical Sciences, Chemistry & Technology
- Subtopic: SI Units, Instruments, Chemical Compounds & Optics
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