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Question

In vacuum, Light travels at a speed of

[A] 3.0 × 107 m s-1

[B] 30 × 108 m s-1

[C] 3.0 × 10-8 m s-1

[D] 3.0 × 108 m s-1

Answer & Explanation
Answer: 3.0 × 108 m s-1

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