Question

If the speed of light in water of refractive index 4/3 is 2.25 X 10^8m/s, what will be the speed of light in water?

Answer 1

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

4/3= 2.25×10^8/ speed of water

Speed of water=2.25×10^8×3/4

Hope it would helps u✌✌

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