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Problem: A point source of light illuminates an aperture 2.00 away. A 14.0 -wide bright patch of light appears on a screen 1.00 behind the aperture.How wide is the aperture (in cm)?

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Diagrammatically:

Considering triangles ABE and ACD:

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Problem Details

A point source of light illuminates an aperture 2.00 away. A 14.0 -wide bright patch of light appears on a screen 1.00 behind the aperture.

How wide is the aperture (in cm)?

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