The refractive index of glass is 1.50 and the speed of light in air is `3xx10^(8)m//s`. Calculate the speed of light in glass.

Explanation

Refractive index of a medium, `n_m`=Speed of light in vaccum/
Speed of light in the medium Speed of light in vaccum, `c=3xx10^8ms^(-1)`
Refractive index of glass,`n_g=1.50`
Speed of light in the glass, v=Speed of light in vaccum/
Refractive index of glass`=c//n_g=3xx10^8//1.50=2x10^8ms^(-1)`