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The speed of light in a diamond is 1,24,000km/s. Find the refractive index of diamond if the speed of light in air is 3,00,000 km/s .



Refractive index of a medium = Speed of light/vacuum in air
                                               Speed of that medium in air

Refractive index of  diamond = 3,00,000 km/s
                                             1,24,000 km/s

Refractive index of diamond = 2.41
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