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Question : What is the speed of light in Vacuum?
Answer : The value of speed of light in vacuum is 3×10^5 km/s or 3×10^8 m/s. It means that the light travels in the vaccum with the speed of 3,00,000 km per second or 30,00,00,000 meters per second.
The value of the speed of light is different in the different medium, for ex.
Speed of light in vaccum = 3×10^8 m/s.
Speed of light in water = 2.25×10^8 m/s.
Speed of light in glass = 2×10^8 m/s.
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