Question

Refractive index of water is 1.33 and the speed of light in air is 3x10 8 ms-1 find speed of water.

Answer 1

dear this formula can be used

Answer 2

Answer: The speed of the water is $v = 2.25\times10^{8}\ m/s$

Explanation:

Given that,

Refractive index n = 1.33

Speed of light $c = 3\times10^{8}m/s$

We know that,

The refractive index is the ratio of the speed of the light in the vacuum and the speed of the light in the medium.

$n = \dfrac{c}{v}$

$1.33 = \dfrac{3\times10^8}{v}$

$v = 2.25\times10^{8}$

Hence, The speed of the water is $v = 2.25\times10^{8}\ m/s$