What is the fixed value of the speed of light in vacuum used to define the metre? - Some Basic Concepts of Chemistry Quiz | GKFix.in

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Question

What is the fixed value of the speed of light in vacuum used to define the metre?

A. 300000000 m/s
B. 299792459 m/s
C. 299792458 m/s
D. 343 m/s

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