Question

19. Speed of light in vacuum is 3 x 10^8m/s. If refractive index of glass is 3/2, then find
speed of light in galss​

Answer 1

Answer:

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