Magnification (AQA A-Level Biology): Quizzes

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Magnification
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What does magnification tell us about an image?

How much larger image appears vs real object

In microscopy, what is the 'object'?

The specimen being examined

What is the formula for magnification?

image sizeobject size\frac{\text{image size}}{\text{object size}}

How do you calculate the real object size?

image sizemagnification\frac{\text{image size}}{\text{magnification}}

How do you calculate the image size?

magnification×object size\text{magnification} \times \text{object size}

Before calculating magnification, what must you ensure about units?

Both measurements use the same units

What is a micrometre (μ\mum) equivalent to in metres?

10610^{-6} m

An object of 100 nm appears 10 mm in a photo. What is the magnification?

×100,000\times 100,000

What is the most common error in magnification calculations?

Not converting to the same units first

What is the difference between magnification and resolution?

Magnification = size; resolution = detail

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