how speed of light is calculated in water?
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Explanation:
The expected speed of light in water is c/n=2.26×108 m/s, where n=1.33 is the refractive index of water. Our results are thus within 7% of the values expected for both water and air, even though only about 6 ft of water occupied the space between the two mirrors.
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Refractive index = Speed of light in vaccum / Speed of light in water. It is denotes as n = c / v, v = c / n= 3 × 10^8 m/s / (1.33) = 2.25 × 10^8 m/s. Therefore, refractive index of the water can be measure by the Speed of light in water is 2.25 × 10^8 m/s.
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