Question

If the speed of light through a piece of ruby is 1.95 x 10^8 m/s, what is the index of refraction?

Answer 1

Answer:

We know that refractive index n=

velocityoflightinmedium

velocityoflightinair

=

v

c

Here c=3×10

8

m/s

n=1.54

1.54=

v

3×10

8

v=1.95×10

8

m/s