The speed of light in water is _________?
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The speed of light in water is 2.25 x 108 m/s If the speed of light in vacuum be 3 x 108m/s calculate the refractive index of water.
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225,000 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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