What is the speed of light in vacuum? MCQ with Answer and Explanation

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What is the speed of light in vacuum?

A. 3 x 10^8 m/s

B. 5 x 10^8 m/s

C. 4 x 10^8 m/s

D. 2.5 x 10^8 m/s

Answer: Option A

Solution (By JKSSB Mock Tests)

The speed of light is approximately 300,000 km/s or 3 x 10^8 m/s.

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