Question

What is the speed of light in air, water and glass?​

Answer 1

Explanation:

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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Answer 2

Answer:

In air = 300000 km/s

In water = 2.25 x 10^8 m/s

In glass = 300,000 km/s