1.

Define absolute refractive index of a medium. Light enters from air to water having refractive index 4/3 . Find the absolute refractive index of a medium if the speed of light in vacuum is 3xx10^(8) m/s.

Answer»

SOLUTION :Absolute refractive index of a medium
`=("Velocity of LGIHT in vacuum")/("Velocity of light in medium")`
`v=c/n=(3x10^(8))/4=2.25xx10^(8)m//s`


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