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Learning objective

Utilize ray diagrams to explain the concepts of normal, angle of incidence, and angle of reflection.

Read the explanation, check the common trap, then practise with flashcards and questions.

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE Combined ScienceWavesCore content

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Quick explanation

Utilize ray diagrams to explain the concepts of normal, angle of incidence, and angle of reflection

  • This point belongs to Light, especially Light outcomes.
  • You need to be able to utilize ray diagrams to explain the concepts of normal, angle of incidence, and angle of reflection.
  • The key ideas to know are Define and Describe.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DefineDescribe

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This objective helps connect Light outcomes to exam-style questions, flashcards, and revision notes for Light.

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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.

    Aim for approximately 2 distinct marking points.

    [2]
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