Question

The speed of light in water is 2.25 108m/s. If the speed of light in vacuum be 3  108m/s, refractive index of water is

Answer 1

Speed of light in water is 2.25x 108 m/s. If speed of light in vacuum is 3x108 m/s, calculate the refractive index of ... 2.25/3 225/300 9/12 3/4 is the refractive index. 3.3.

Answer 2

Answer:

Explanation:

Solution,

Here, we have

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

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

To Find,

Refractive index of water = ?

According to the Formula,

We know that,

Refractive index of water = Speed of light in vacuum/Speed of light in a medium

And For water,

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

So, putting all the values, we get

⇒ Refractive index of water = Speed of light in vacuum/Speed of light in water

⇒ Refractive index of water = 3.0 × 10⁸/2.25 × 10⁸

⇒ Refractive index of water = 1.33.

Hence, the refractive index of water is 1.33.