The diagram illustrates a ray of light moving from air into medium Q. What is the critical angle at the boundary between medium Q and air?
- A$57.5^\circ$
- B$58.0^\circ$
- C$60.9^\circ$
- D$61.6^\circ$
Physics 5054 · O Level · Refraction of light
Physics 5054 · O Level · Refraction of light
The diagram illustrates a ray of light moving from air into medium Q. What is the critical angle at the boundary between medium Q and air?