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O-LevelPhysicsLight5054/12 · Oct/Nov 2023 · Q271 Mark

Light travelling in air is incident on a water surface. The refractive index of water is 1.3 and the angle of refraction in the water is 40°. What is the angle of incidence in the air?

A30°

B50°

C52°

D57°

✓ Correct answer

D: 57°

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About this question

Topic: Light, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2023 Paper 1 Variant 2, question 27.

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