The speed of light in a diamond is 1,24,000 km/. Find the refractive index of diamond if the speed of light in air is 3,00,000 km/.
airnmedium = ( Speed of light in air/Speed of light in medium) = c/v
airndiamond = 3,00,000 kms-1/1,24,000 kms-1 = 2.42.
