Illuminated perpendicular to its surface

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A film of soapy water (n = 1.33) on top of a sheet of crown glass has a thickness of 220 nm. What wavelength is most strongly reflected if it is illuminated perpendicular to its surface? (This is the apparent color of the soapy film.)

 

 

Reference no: EM13882852

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Illuminated perpendicular to its surface : A film of soapy water (n = 1.33) on top of a sheet of crown glass has a thickness of 220 nm. What wavelength is most strongly reflected if it is illuminated perpendicular to its surface? (This is the apparent color of the soapy film.)
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