Question

if the speed of light in vacuum is 3 x 10 ^ 8 metre per second find the observed index of the speed medium in which light travels with a speed of 1.4 x 10 ^ 8 metre per second​

Answer 1

Explanation:

sinr

i.e,. sinr = Constant

Speed of light in vacuum, c=3×10 8 m/s

Speed of light in medium, v=1.4×10 8m/s

Absolute refractive index = Speed of light in medium

Speed of light in vacuum

= 3×10 8 m/s

1.4×10 8 m/s

=2.14

=