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Exam-style practice

Light answer explanations

Review worked answers and explanations for Light. Aligned to Cambridge IGCSE Combined Science.

Answer explanations

Question 1 of 28

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Paper 3 structured question: Light

Paper 3Theory (Core)2 marks

Description

Ray Diagram Components

In a ray diagram, light rays interact with a reflective surface. The normal line is drawn at the point of incidence, and angles are measured from this line.

  1. a

    Explain the significance of the normal line in ray diagrams.

    [2]