Magnification (OCR GCSE Physics A (Gateway Science Suite)): Flashcards

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Magnification
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What type of image is created by magnification?

Virtual image

Size of magnified virtual image vs object

Larger than the object

Name for image created by magnification

Magnified virtual image

Object position needed for magnification

Closer to lens than principal focus

Formula for magnification

magnification=image sizeobject sizemagnification = \frac{image\,size}{object\,size}

What type of value is magnification?

Ratio

Units of magnification

No units (it's a ratio)

Meaning of negative magnification

Image is smaller than the object

Rearranged magnification equation for image size

image size=magnification×object sizeimage\,size = magnification \times object\,size

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