Question

The bacterium in the diagram has been magnified so that it appears to be 2.0 cm in length. If its actual length is 2.0 µm, how many times has it been magnified?

Answer 1

The bacteria shown in the figure has been magnified ten thousand times, as indicated by the value of the magnification factor.

What is the magnification of an object?

When examined using a magnifying device such as a microscope, the size of an item seems to have expanded by a certain degree or quantity. This phenomenon is referred to as the magnification of the thing in question.

Magnification = size of the image/size of the actual object

Therefore

$1 µm = \frac{1}{00 000}--- > 1 µm = \frac{1}{10 000 }cm$

Therefore

2.0 µm = 2.0 * 1/10 000 cm

= 2.0 * 10^{-4} cm

Hence, Magnification

M= 2.0 cm /2.0 * {-4} cm

M = 10000 X

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