O-LevelPhysicsLight5054/11 · May/June 2016 · Q211 Mark
Light is incident on a mirror. The light is reflected from the mirror. The angle of incidence is i and the angle of reflection is r. Which diagram correctly shows i and r?
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.
ADiagram A showing angles i and r measured from the mirror surface.
BDiagram B showing angle i from normal, angle r from mirror surface.
CDiagram C showing angles i and r measured from the normal.
DDiagram D showing angle i from normal, angle r from mirror surface (different orientation).
✓ Correct answer
C: Diagram C showing angles i and r measured from the normal.
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