Question

The speed of light in air is 3.0 × 10^8 m / s. Its speed in glass is 2.0 × 10^8 m / s. Calculate the refractive index of the glass

Answer 1

Answer:

1.5

Explanation:

the speed of light in the vacuum

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)

hence we get

ng = 1.5