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Cambridge IGCSE Computer Science practice

Paper 1 structured question: Text, sound and images

Try the question first, then check the answer and practise the same topic again.

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Text, sound and images

Exam-style question

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Paper 1Computer Systems1 marks

Understanding image representation in computers is crucial for various applications.

Description

Image Representation

An image is made up of pixels, which are converted into binary for processing. Resolution is defined by the number of pixels, while colour depth refers to the bits used for each colour.

  1. a

    State What is meant by resolution in the context of images?

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 1 structured question: Text, sound and images

Paper 1Computer Systems2 marks

Description

Image Quality Factors

Increasing resolution and colour depth enhances image quality but also increases file size.

  1. a

    Explain How does increasing colour depth affect the quality of an image?

    Aim for approximately 2 distinct marking points.

    [2]