I need help figuring out these 3 problems dealing with refraction help anyone!!!

Question

I need help figuring out these 3 problems dealing with refraction help anyone!!!

The index of refraction of water is 1.33. What is the speed of light (in units of "c") in water, where c - speed of light in a vacuum? Submit Answer Incorrect. Tries 2/8 Previous Tries The index of refraction of glass is 1.50. What is the speed of units of c ) in glass, where c = speed of light in a vacuum? Submit Answer Tries 0/8 speed of light (in units of "c") in diamond, where c - speed of light in a vacuum? Submit Answer Tries 0/8

Explanation / Answer

1) speed in water = 3.0 x 108 / 1.33 = 2.2556 x 108 m/s

2) speed in glass = 3.0 x 108 / 1.50 = 2.0 x 108 m/s

3) speed in diamond = 3.0 x 108 / 2.419 = 1.24 x 108 m/s

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