define absolute refractive index of a medium in terms of velocity of light.how is relative refractive index different from it?

Asked by my3shyll | 21st Mar, 2017, 08:05: AM

Expert Answer:

  • Refractive index usually depends upon the wavelength of the light and the density of a medium.
  • The absolute refractive index is the ratio of the speed of light in vacuum and in selected medium
            begin mathsize 12px style Absolute space refractive space index equals fraction numerator Speed space of space light space in space vacuum over denominator Speed space of space light space in space given space medium end fraction end style
  • Whereas the relative refractive index is the ratio of speeds of light in two different media.

Answered by Abhijeet Mishra | 21st Mar, 2017, 10:46: AM