Question

The speed of the light in a diamond is $1,24,000km/s$. Find the refractive index of diamond if the speed of light in air is $3,00,000km/s$

Answer 1

Given: The speed of the light in a diamond is 1,24,000 km/s, the speed of light in air is 3,00,000 km/s

To find the refractive index of the diamond

Solution:

We know,

$\text{Refractive index of the medium}=\frac{\text{Speed of light in air}}{\text{Speed of the medium in air}}⟹\text{Refractive index of diamond}=\frac{300000km/s}{124000km/s}=\frac{300}{124}=2.4$