Question

2. The velocity of the light in an 'X' medium is 2x 108 m/sec. And velocty of light in Air is 3 x 108
m/s then find the Refractive Index of medium X ....
a light travel from one medium to​

Answer 1

Glass refractive index is defined as the ratio between the speed of light in the vacuum and the speed of light in the glass.

Refractive index of glass (ng) = Speed of light in vacuum/speed of light in the glass.

ng = (3 ×108)/ (2 ×108)

ng = 1.5