IF the refractive index of diamond is 2.4. Find the velocity of light

1.	IF the refractive index of diamond is 2.4. Find the velocity of light is diamond.
Answer» `1.25 TIMES 10^8 m//s` `2.25 times 10^8 m//s` `1.5 times 10^8 m//s` `4.25 times 10^8 m//s` ANSWER :A

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