If the speed of light in glass is 2 × 10 8 m s - 1 and that in air is 3 × 10 8 m s - 1 , calculate the refractive index of glass with respect to air.

Given: Speed of light in glass v = 2 × 10 8 m s - 1 Speed of light in air c = 3 × 10 8 m s - 1 Refractive index of glass with respect to air is, μ = c v μ = 3 × 10 8 m s - 1 2 × 10 8 m s - 1 = 1 .5

The speed of light in a transparent medium is 2 . 44 × 10 8 m s - 1 . Find the refractive index of the medium. (Take the speed of light in air is 3 × 10 8 m s - 1 )

Given that, Speed of light in the transparent medium, v = 2 . 44 × 10 8 m s - 1 Speed of light in air, c = 3 × 10 8 m s - 1 Refractive index of a medium with respect to air is, μ = c v μ = 3 × 10 8 m s - 1 2 .44 × 10 8 m s - 1 = 1 . 23

Find the refractive index of a medium if the speed of light in that medium is 2 . 25 × 10 8 m s - 1 . (Speed of light in air is 3 × 10 8 m s - 1 )

Given: Speed of light in the transparent medium v = 2 . 25 × 10 8 m s - 1 Speed of light in air c = 3 × 10 8 m s - 1 Refractive index of a medium with respect to air is, μ = c v μ = 3 × 10 8 m s - 1 2 . 25 × 10 8 m s - 1 = 1 .33