The absolute refractive index of a medium is 2.0. The speed of light in vacuum/air is `3 xx 10^(8) m s^(-1)`. Find the speed of light in the medium.

Explanation

Absolute refractive index of medium is,
`n= (c )/(v) `
` therefore v= (c )/(n) `
` = (3 xx 10^(8))/(2) `
` = 1.5 xx 10^(8) ms^(-1) `