Which describes refraction? *
10 points
O
Refracted rays travel through a boundary into a new medium.
O
The angle of incidence is the same for angle of refraction
Refracted rays change direction and go back to the original medium

Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space? the cloud is extremely hot. the cloud is visible primarily because it reflects light from nearby stars. the cloud is cool and lies between you and a hot star. the cloud is cool and very dense, so that you cannot see any objects that lie behind it.