Question

The velocity of light in a medium is 0.75 x 108 m/s. Find the refractive index of the medium with respect to air.​

Answer 1

Given : Velocity of medium =1.5×10

8

m/sec.

Velocity of light, c=3×10

8

m/sec.

To find : n=?

n=

v

c

n=

1.5×10

8

3×10

8

=2

n=2

Hence, the refractive index of the medium with respect to air is 2.

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