O-LevelPhysicsLight5054/11 · May/June 2014 · Q251 Mark
Three rays of light are incident on the boundary between a glass block and air. The angles of incidence are different. What is a possible critical angle for light in the glass?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A15°
B30°
C45°
D60°
✓ Correct answer
C: 45°
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