The table displays the velocity of light in three different states of matter.

Question

Material:
Air
Water
Glass

Speed (Meters/second):
300,000,000
220,000,000
200,000,000

when would the speed of light decrease?

When light moves from air into water.
When light transitions from glass to air.
When light transitions from water to air.
When light moves from glass to water.

Answer 1

The speed of light would decrease in the following scenarios:

1. When light moves from air into water.
2. When light transitions from glass to air.
3. When light transitions from glass to water.