Question

what is speed of light​

Answer 1

The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is 299,792,458 metres per second (approximately 300,000 km/s (186,000 mi/s)[Note 3]). It is exact because by international agreement a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1/299792458 second.

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Answer 2

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Speed of Light is =>

$\boxed{2,99,792.458\: km/second}$

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