# What is the relationship between the angle of incidence and the angle of refraction when light passes from a medium where its speed

What is the relationship between the angle of incidence and the angle of refraction when light passes from a medium where its speed is greater into a medium where its speed is lower?

## This Post Has 3 Comments

1. Expert says:

Abecause its more effective

2. Expert says:

answer: i'm not sure which is which for i get confused on it all the time but i can tell you that the answer lies with the convex and concave devices. i hope this you. have a good day and best of luck to you!

explanation:

$For which optical devices does d sometimes have a positive value?$

3. tamiyahtapp says:

This is because the speed of a wave is determined by the medium through which it is passing. When light speeds up as it passes from one material to another, the angle of refraction is bigger than the angle of incidence. For example, this happens when light passes from water to air or from glass to water ❤