Question

Calculate the refractive index of the material of a glass slab. Given
that the speed of light through the glass slab is 2 x 108 m/s and in
air is 3 x 108 m/s.​

Answer 1

Answer:

here is your answer

Explanation:

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

Answer 2

Explanation:

answer is 3/2

because refractive index =speed pf light through vaccu /speed of light in medium

=3×108/2×108

=3/2m/s

=1.5m/s