the absolute refractive indices of glass and water are 4/3 & 3/2 respectivly . if the speed of light in glass is 2 x 10(power of 8 ) m/s , calculate the speed of light in 1} vaccum 2 } in water.

the absolute refractive indices of glass and water are 4/3 & 3/2 respectivly . if the speed of light in glass is 2 x 10(power of 8 ) m/s , calculate the speed of light in 1} vaccum 2 } in water.