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  • Brainly User
2015-06-15T12:47:07+05:30

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the speed of light = 299 792 458 m / s

The speed of light changes with change in medium

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2015-06-15T12:57:30+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
(Speed of light in vacuum/air = 299 792 458 m/s ≈ 3 × 10 ⁸ m/s)

The speed of light varies from one medium to the other.
It depends on the nature of the medium.

In space, which is nothing but vacuum, the speed of light is equal to 3 × 10^8 m/s.
However, on land it changes from one medium to the other.

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