The critical angle is least in A) glass. B) water. C) ...

[BRWH]

The critical angle is least in
 
  A) glass.
  B) water.
  C) diamond.
  D) vacuum.

Question 2

If you view a rainbow out your window while riding in a train, you'll see that
 
  A) the rainbow can only be seen while you're moving slowly or at rest.
  B) the rainbow moves along with you.
  C) you soon pass by it, leaving it where you first saw it.

[Expo]

Answer to Question 1

Answer: C

Answer to Question 2

Answer: B

[BRWH]

Thanks for the timely response, appreciate it

[amynguyen1221]

Excellent