Question

The velocities of light in vacuum and an other medium are 3×10^8 m/s and 1.5×10^8 m/s respectively. Find the absolute refractive index of the medium.

Answer 1

Answer:

2

Explanation:

Absolute refractive index of a medium is defined as the ratio of the velocity of light in vacuum to the velocity of light in the medium. If c is the velocity of light in vacuum and v in the medium, then n=c/v.

here, c=3x10^8 m/s, v=1.5x10^8 m/s.

n=c/v,

n=(3x10^8 m/s)/(1.5x10^8 m/s)

n=2