Question

What is the speed of light in a medium of refractive index 1.4 if its speed in air is 3, 00,000 km/s?

Answer 1

Answer:

Explanation:

1.8=300000÷speed of light in that medium

speed of light in medium=300000÷1.8=166666.667

Answer 2

Explanation:

Given:-

Refractive index =1.8

Speed of light =300000km/s

Refractive index = speed of light/refractive index

= 300000/1.8

= 166666.667