OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A scientist observed a cell using an electron microscope. The size of the image was 25 mm. The magnification was × 100 000 Calculate the real size of the cell.
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0.000 25 micrometres
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25 micrometres
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0.25 micrometres
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250000 micrometres
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Explanation:
Detailed explanation-1: -Magnification equation Magnification = image size / actual size. Actual size = image size / magnification. Image size = magnification x actual size.
Detailed explanation-2: -Working out magnification: Measure the scale bar image (beside drawing) in mm. Convert to µm (multiply by 1000). Magnification = scale bar image divided by actual scale bar length (written on the scale bar).
Detailed explanation-3: -(ii) Electron Microscope – It magnifies an object up to 2, 00, 000 times.
There is 1 question to complete.