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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Size of specimens

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3

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2

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Topic

Size of specimens

Exam-style question

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Paper 3Theory (Core)2 marks

A student measures an image of a leaf under a microscope. The image size is found to be 20 cm, while the actual size of the leaf is 4 cm.

Description

Leaf Observation

The image size is 20 cm and the actual size is 4 cm.

  1. a

    Determine the magnification of the leaf image.

    Aim for approximately 2 distinct marking points.

    [2]

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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]