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Learning objective

Identify and apply the equation for magnification in relation to image size and actual size.

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

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Exam focus

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

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Quick explanation

Identify and apply the equation for magnification in relation to image size and actual size

  • This point belongs to Size of specimens, especially Size of specimens outcomes.
  • You need to be able to identify and apply the equation for magnification in relation to image size and actual size.
  • The key ideas to know are State, Define, and Explain.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

StateDefineExplain

Why it matters

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

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Paper 3 structured question: Size of specimens

Paper 3Theory (Core)2 marks

Description

Microscope Observation

The image size is 15 mm and the actual size is 3 mm.

  1. a

    Calculate the magnification of the image.

    Aim for approximately 2 distinct marking points.

    [2]
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