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O-LevelPhysicsLight5054/11 · May/June 2023 · Q201 Mark

Light is incident on a mirror at an angle of 45° as shown. The mirror can be rotated about an axis into the page through point X. The mirror is rotated until the light is reflected back along its original path. Through which angle is the mirror rotated?

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A22.5° clockwise

B22.5° anticlockwise

C45° clockwise

D45° anticlockwise

✓ Correct answer

C: 45° clockwise

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About this question

Topic: Light, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2023 Paper 1 Variant 1, question 20.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content

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