Question

What is the speed of light in different states of matter? (solids, liquids, gases and vacuums)

Answer 1

Answer:

As a rule sound travels slowest through gases, faster through liquids, and fastest through solids. The speed of light as it travels through air and space is much faster than that of sound; it travels at 300 million meters per second or 273,400 miles per hour.

Answer 2

Answer:

The speed of light depends on refractive index of the material.

Explanation:

The refractive index is given as;

$\mu = \frac{speed \: of \: light \: in \: vacuum}{speed \: of \: light \: in \: medium} \\ \mu = \frac{c}{v}$

Here, c is the speed of light in vacuum (c=3×10^8 m/s) and v is the speed of light in medium.

Therefore, speed of light in medium is given as,

$v = \frac{ c}{ \mu}$