Science, asked by darm, 3 months ago

what is the speed of light in vacuum?

Answers

Answered by sudhanshupathak59

Answer:

speed of light in vacuum is approx 3lakh km/ second

Answered by Anonymous

Answer:

approximately 300,000 kilometers per second

Light travels at approximately 300,000 kilometers per second in a vacuum, which has a refractive index of 1.0, but it slows down to 225,000 kilometers per second in water (refractive index of 1.3; see Figure 2) and 200,000 kilometers per second in glass (refractive index of 1.5).

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