Question

The speed of light in water is 2.25×10^8m/s. Calculate the refractive index of water?

Answer 1

we have
C=C•/n...where C• is the speed of light in any medium and C is in vaccum...n is refractive index of that medium
so,
n=C•/C=2.25×10^8/3×10^8=0.75 or 3/4
hope u satisfied by my answer

Answer 2

Answer:

1.33

Explanation:

Given :

Speed of light in water = 2.25 × 10⁸ m / sec

We have

Speed of light in air = 3 × 10⁸ m / sec.

We know :

Refractive index = Speed of light in air / Speed of light in water

Putting value we get :

Refractive index = 3 × 10⁸ m / sec / 2.25 × 10⁸ m / sec

Refractive index = 1.33

Hence Refractive index is 1.33 .