Question

State the laws of refraction of light. If the speed of light in vacuum is 3 108 m/s, find the absolute refractive index of a medium in which light travels with a speed of 14 108 m/s.

Answer 1

Answer:Refractive index of a medium = speed of light in vacuum/speed of light in the medium

                                              = 3 x 108/(1.4 x 108)    

                                              = 2.14

Explanation: