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O-LevelPhysicsLight5054/11 · May/June 2015 · Q221 Mark

A ray of light is incident on the surface of a glass block, as shown in the diagram below. The refractive index of the glass is 1.5. The light ray changes direction when entering the glass. What is the angle x through which the ray moves?

Diagram for this question, from the exam paper

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.

A30°

B28°

C17°

D15°

✓ Correct answer

C: 17°

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About this question

Topic: Light, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2015 Paper 1 Variant 1, question 22.

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