Question

The speed of light in air is × m/s. In the medium X its speed is × m/s and in

medium Y the speed of light is . × m/s. Calculate refractive index of medium Y

with respect to medium X.​

Answer 1

Explanation:

Given:

Speed of light in air = 3.0 x 108m/s

Speed of light in medium X = 2.0 x 108m/s

Speed of light in medium Y = 2.50 x 108m/s

(a) airnx = ?

airnx = speed of light in air/speed of light in medium x

airnx = 3.0 x 108 m/s/2.0 x 108m/s

= 1.5

(b) airny = ?

airny = speed of light in air/speed of light in medium y

airny = 3.0 x 108m/s/2.50 x 108m/s

= 1.2

(c) xny=?

xny = speed of light in medium x/speed of light in medium y

xny = 2.0 x 108m/s/2.50 x 108m/s

=