Question

The velocity of light in diamond is 121000 km/s. What is its refractive index?

Answer 1

Answer:

refractive index

= velocity of light in vaccum/ velocity of light in medium

so the refractive index = 3 x 10^5/1.21 x 10^5

= 3/1.21 = 2.47

hope this will help you

Answer 2

Answer:

velocity in diamond=121000km/s .....(1)

velocity in vaccum=300000km/s .....(2)

refractive index=V2/V1

=300000/121000

=2.47

This is best answer