What is the speed of light in vaccum
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● Its exact value is defined as 299792458 metres per second.
The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is defined as 299792458 metres per second.
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Explanation:
The speed of light in a vacuum is denoted by the c , and it is universal constant in many areas of the Physics. its exact value is defined as 299792458 metre per second .
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