Question text
22 The diagram shows a ray of light travelling from air to medium Q. NOT TO SCALE air 42.0(cid:1) medium Q 49.5(cid:1) What is the critical angle for the boundary between medium Q and air? A 57.5° B 58.0° C 60.9° D 61.6°
22 The diagram shows a ray of light travelling from air to medium Q.
NOT TO
SCALE
air
42.0(cid:1)
medium Q
49.5(cid:1)
What is the critical angle for the boundary between medium Q and air?
A 57.5° B 58.0° C 60.9° D 61.6°
Select your answer: