Waves: Refraction

Question 1

What happens when light passes from air into glass? What does this result in?

Answer 1

Its velocity decreases meaning its direction changes.

Question 2

When waves slow down, which way do they bend in terms of the normal line?

Answer 2

They bend towards the normal line.

Question 3

What happens when light exits a glass block and enters air?

Answer 3

Its velocity increases so it bends away from the normal.

Question 4

What happens if the waves enter or leave the medium at 90° to the surface (in other words, along the normal)?

Answer 4

Their direction does not change.

Question 5

What will happen when an EM wave, like light, enters a denser medium?

Answer 5

It slows down.