O-LevelPhysicsLight5054/11 · May/June 2011 · Q221 Mark
In which diagram is the path of the light ray not correct?
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 showing a light ray passing from air into water, bending towards the normal.
Bdiagram showing a light ray incident on a semi-circular glass block from air, passing through the curved surface and then internally reflected at the flat surface.
Cdiagram showing a light ray passing from air into a triangular perspex block, bending towards the normal, and then passing out into air, bending away from the normal.
Ddiagram showing a light ray passing from air into a convex lens (glass) and refracting towards the principal axis, then passing out into air and refracting further towards the principal axis.
✓ Correct answer
D: diagram showing a light ray passing from air into a convex lens (glass) and refracting towards the principal axis, then passing out into air and refracting further towards the principal axis.
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