O-LevelPhysicsLight5054/11 · May/June 2017 · Q271 Mark
Light travelling in glass is incident on a glass-air boundary. The angle of incidence of the light is greater than the critical angle. Which arrow shows the direction of the light after it is incident on the boundary?
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.
AArrow A (refracted into air, away from normal)
BArrow B (reflected back into glass)
CArrow C (refracted into air, along the normal)
DArrow D (transmitted straight through)
✓ Correct answer
B: Arrow B (reflected back into glass)
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