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O-LevelPhysicsLight5054/11 · May/June 2010 · Q201 Mark

A semi-circular block is made from a plastic. A ray of light passes through it at the angles shown. To two decimal places, what is the refractive index of the plastic?

Diagram for this question, from the exam paper

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A1.25

B1.41

C1.51

D1.61

✓ Correct answer

C: 1.51

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About this question

Topic: Light, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2010 Paper 1 Variant 1, question 20.

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