The speed of light in air is approximately – McqOptions

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1.	The speed of light in air is approximately
A.	3.0 × 108 m s-1
B.	4.0 × 108 m s-1
C.	3.0 × 105 m s-1
D.	5.0 × 108 m s-1
Answer» B. 4.0 × 108 m s-1

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