Question

The speed of light will be minimum while passing through

A) waterB) vaccumC) airD) glass

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Answer 1

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 and 200,000 kilometers per second in glass.

Answer 2

glass is the answer for your question