Question

the refractive index of air in water is 2.25 x 10^8 m/s and speed in vaccum is 3 x 10^8 m/s.Calculate the refractive index of water?

Answer 1

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

Speed of light in water = 2.25 x 108m/s

Refractive index of water = ?

We know that

Refractive index of water = speed of light in vacuum/speed of light in water

Refractive index of water = 3 x 108/2.25 x 108 = 1.33