Question

Find the value of speed of light in water having refractive refractive index of 1.33

Answer 1

Refractive index of a medium. ⇒ Speed of light in the medium = It is given that the refractive index of water is. The speed of light in vacuum is 3 × 10 8 m/s

Answer 2

Answer:

2.25 × 10⁸ m / sec

Explanation:

Given :

Refractive index of water = 1.33

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

We know :

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

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

Putting value we get :

Speed of light in water = 3 × 10⁸ m / sec / 1.33 .

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

Hence speed of light in water is 2.25 × 10⁸ m / sec