A film of oil lies on wet pavement. The refractive index of the oil exceeds that of the water. The film has the minimum nonzero thickness such that it appears dark due to destructive interference when viewed in visible light with wavelength 639 nm in vacuum. Assuming that the visible spectrum extends from 380 to 750 nm, what is the longest visible wavelength (in vacuum) for which the film will appear bright due to constructive interference? Number Units <>
A film of oil lies on wet pavement. The refractive index of the oil exceeds that of the water. The film has the minimum nonzero thickness such that it appears dark due to destructive interference when viewed in visible light with wavelength 639 nm in vacuum. Assuming that the visible spectrum extends from 380 to 750 nm, what is the longest visible wavelength (in vacuum) for which the film will appear bright due to constructive interference? Number Units <>
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Transcribed Image Text:A film of oil lies on wet pavement. The refractive
index of the oil exceeds that of the water. The film
has the minimum nonzero thickness such that it
appears dark due to destructive interference when
viewed in visible light with wavelength 639 nm in
vacuum. Assuming that the visible spectrum extends
from 380 to 750 nm, what is the longest visible
wavelength (in vacuum) for which the film will
appear bright due to constructive interference?
Number i
Units
<>
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