Question

The refractive index of white diamond is 2.4. Find the speed of light in diamond.

Answer 1

Answer:

By definition value of refractive index = speed of light in air / speed of light in the medium

So,2.4=3× 10

8

/ speed of light in the medium

Or, Speed of light in the medium = 3×10

8

/2.4 = 1.25× 10

8

Answer 2

Answer:

Speed of the light in air = 3 × 10^8 m/s

Given Refractive index of diamond = 2.4

Refractive index = speed of the light in air / speed of the light in medium.

2.4 = 3 × 10^8 m/s / Speed of light in medium

Speed of light in medium = 3×10^8 / 2.4 m/s.

= 1.25 × 10^8 m/s.

Explanation: