Question

Which term is defined as the ratio of the speed of light in a vacuum to the speed of light in the material it is passing through?

index of reflection


index of refraction


angle of incidence


angle of reflection

Answer 1

index of refraction

Step-by-step explanation:

Answer 2

The index of refraction

What is the index of refraction?

The index of refraction tells us how much slower or faster light travels from one medium to another.

• What is a medium? ⇒ the substance that light passes through

The formula to find the refractive index of a substance is the following:

`n=(c)/(v)`

• 
  `c` = the speed of light in a vacuum (
  `3.00*10^8` m/s)
• 
  `v` = the speed of light in the medium

This makes the index of refraction defined as the ratio of:

• the speed of light in a vacuum
• the speed of light in the material it passes through