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Cambridge IGCSE Physics practice

Paper 4 structured question: Thin lenses

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Thin lenses

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Paper 4Theory (Extended)3 marks

Understanding the formation of images by converging lenses is essential in optics.

Description

Converging Lens Image Formation

Explain how a converging lens can form a virtual image and illustrate this with a ray diagram.

  1. a

    State the position of the object relative to the focal point for a virtual image to be formed.

    Aim for approximately 1 distinct marking point.

    [1]
  2. b

    State two characteristics of the virtual image formed by a converging lens.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 4 structured question: Thin lenses

Paper 4Theory (Extended)2 marks

Diagram Description

Ray Diagram for a Converging Lens

Draw a ray diagram to show how a converging lens forms a virtual image when the object is placed within the focal length.

  1. a

    State the characteristics of the virtual image formed by a converging lens when the object is within the focal length.

    Aim for approximately 2 distinct marking points.

    [2]