ObjectiveMcq
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What is the speed of light in a vacuum?
3 × 10⁸ m/s
3 × 10⁶ m/s
3 × 10¹⁰ m/s
3 × 10⁴ m/s
Correct Answer: A — 3 × 10⁸ m/s
The speed of light in vacuum is approximately 3 × 10⁸ m/s.
