Question text
30 Three rays of light are incident on the boundary between a glass block and air. The angles of incidence are different. air glass 40° 50° 20° What is a possible critical angle for light in the glass? A 15° B 30° C 45° D 60°
30 Three rays of light are incident on the boundary between a glass block and air.
The angles of incidence are different.
air
glass
40° 50°
20°
What is a possible critical angle for light in the glass?
A 15° B 30° C 45° D 60°
Select your answer: