Welcome to the Quiz!

This quiz contains 7 questions from a mix of 1 subtopics.

How would you rearrange the magnification equation to find image size?

Image size = object size ÷ magnification 

Image size = object size x magnification 

Image size = magnification ÷ object size

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Diagram showing the calculation of magnification using a plant cell with a real width of 0.02 mm and a photograph width of 40 mm.

A plant cell in a photograph measures 40 mm in width. If the real width of the plant cell is actually 0.02 mm, what is the magnification? 

2000

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The nucleus in a photograph of a cell measures 1.5 mm across. If the magnification in the photograph is × 500, what is the actual size of the nucleus?

(Give your answer in mm)

0.003

mm

mm

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Illustration of a woodlouse viewed under a microscope.

Elouise finds a woodlouse that is 8 mm long. When she views it under the microscope it appears 12 cm long. 


What is the magnification?

15

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Illustration of a sperm cell measuring 5 micrometres in length.

A sperm cell is 5 μm long. How long will it appear when viewed under a microscope with a magnifying power of x1500? 

(Give your answer in mm)

7.5

mm

mm

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A scientist observed a skin cell using an electron microscope.

The size of the image was 25 mm, and the magnification was × 100,000.


Calculate the real size of the cell, giving your answer in nm. 

250

nm

nm

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Illustration showing a human egg cell with a width of 100 micrometres, a microscope with x 60 magnification, and a question mark asking for the size in centimetres.

A human egg cell is roughly 100 μm wide.

How large would it appear when viewed under a microscope at x 60 magnification? 

(Give your answer in cm)

0.6

cm

cm

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