O-LevelPhysicsLight5054/11 · Oct/Nov 2014 · Q211 Mark
The diagram shows light travelling through a medium. The light reaches the boundary with a vacuum as shown. The light emerges travelling along the surface. What is the refractive index of the medium?
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.
Asin 60° / sin 30°
Bsin 60° / sin 90°
Csin 90° / sin 30°
Dsin 90° / sin 60°
✓ Correct answer
C: sin 90° / sin 30°
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