Question

Light enters from air into water which is a refractive index of 1.33 calculate the speed of the light in water the speed of light in air is 3 into 10 to power 8 metre per second

Answer 1

Hii mate ,

your answer is

Speed of light in a medium = speed of light in air / refractive index

V2 = 3×10^8 / 1.33

= 2.26× 10^m/s ( approx )

I hope this answer helps you ✅✅✅✅✅✅✅

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