What causes light to slow down?
a
moving into a vacuum
b
moving into a lighter medium
c
moving into a denser medium
d
moving into a less adhesive medium
c
moving into a denser medium
When light waves travel from one medium to another, they can be slowed down if they enter a medium with a higher density. This is because light waves interact with the atoms or molecules in the medium, causing them to scatter and re-emit the light. This interaction slows down the speed of light in the denser medium compared to the less dense medium.