Question

Light travels with the velocity of 3 into 10to the power 8 m/s. what will be its velocity in a glass with refractive index 1.5

Answer 1

We know,

The Refractive Index of Glass = Velocity of Light in Vacuum/Velocity of Light in Glass

=$3x10^{8} /v$

So,

1.5=$3 x 10^{8} /v$

Therefore,

$v = 2 x 10^8$