Question

if the speed of the light in a medium id 2*10^8 m/s,then what is refractive index​

Answer 1

Answer:

Refractive index of a medium = Speed of light in vacuum/Speed of light in a medium

2*10^8 = 3 x 108 / Speed of light in medium

Speed of light in the medium = 3 x 10(8) /2*10^8

                                                 = 1.5x 10(8) m/s.

Explanation:

the ()'s   mean small  8