Question

Which statement best explains the speed of light waves as they travel from gas to solid?

Light waves do not travel through any solids.

Light waves speed up as they travel from gas to solid.

Light waves slow down as they travel from gas to solid.

Light waves continue to travel at the same speed as they travel from gas to solid.

Answer 1

Light waves slow down as they travel from gas to solid.

Step-by-step explanation:

The speed of light is often quoted with reference to a vacuum. Light travels fastest in a vacuum and in a gas.

When light travels through other media such as solids or liquids, the speed of light is decreased due to absorption and scattering of photons by molecules as well as remissions.

Hence the speed of light decreases from gas to solid.