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# Magnification Question

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1. Hey guys, i'm having quite a bit of difficulty with this question, here it is:
Q)'Use the scale bar in the diagram above to calculate the magnification of the drawing (cell), show your working'.
The scale bar is 5 micrometres and measures to 0.9 cm, whilst the cell is 5 cm.
Thank you so much!!!!
2. ok so you can say there is 0.9cm to every 5 Micrometer, the question you have to ask is how many micrometers to every cm. or 5/0.9 =5.556.
Then you can find out how long your cell actually is in micrometers. If the cell is 5cm long 5*5.556= 27.778 micrometers. To find the magnification divide image size by the actual size. (they must be in the same unit)
The cells image is 5cm or 0.05m and its actual size is 27.778 μm or 27.778x10^-6 m. (0.000027778)
(0.05/0.000027778)=1799.9x magnified. its probably 1800x but there will be some rounding errors.

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Updated: October 16, 2016
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