Refraction and Lenses - Mission RL4 Detailed Help

Which diagram(s) below show a light ray having an angle of refraction of approximately 30 degrees (or 60 degrees)? Include all that apply.


 
Definition of Angle of Refraction:
The angle of refraction is the angle made by the ray of light entering the new medium (refracted ray) and the normal line drawn to the surface at the location where the ray enters into the new medium.


 
A common mistake made by beginning physics students is to believe that the angle of refraction is the angle between the refracted ray and the boundary. But don't be fooled! Angles of refraction (and incidence) are always measured between the ray of light and the normal line.