what is accurate speed of light
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The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its precise value is 299792458 metres per second(approximately 3.00×108 m/s), since the length of the metre is defined from this constant and the international standard for time.
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The speed of light in vacuum or air is 3*10^8 m/s.
The speed of light in glass is 2*10^8m/s.
Hope it helps!!
The speed of light in glass is 2*10^8m/s.
Hope it helps!!
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