How is the refractive index of a medium related to the speed of light ? light enters from air to diamond having refractive index 2.40. calculate the speed of light in the diamond. the speed of light in air is 3108ms1?
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μ = Speed of light in air/speed of light in medium
=> 2.4 = 3 * 10^8/ speed of light in diamond
=> Speed of light in diamond = 3 * 10^8/2.4
=> 1.25 * 10^8 m/s
=> 2.4 = 3 * 10^8/ speed of light in diamond
=> Speed of light in diamond = 3 * 10^8/2.4
=> 1.25 * 10^8 m/s
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