Question

If the absolute refractive index of glass and water are 3 to the pub

Answer 1

Actually,

ng = 3/2 and nw = 4/3. Absolute Refractive Index of a medium = Speed of light in vacuum/Speed of light in the medium Speed of light in glass = 2 x 108 m/s Speed of Light in Vacuum = (3/2) x 2 x 108 m/s = 3 x 108 m/s Speed of light in water = (3 x 108 m/s)/(4/3) = 2.25 x 108 m/s

Hope its helps u.