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




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Absolute refractive index=Speed of light in vacuum/Speed of light in diamond
= \frac{3,00,000}{1,24,000}
=2.42 (approx)
Ans:The absolute refractive index of diamond is 2.42.
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