A double slit is illuminated simultaneously with orange light of wavelength 620 nm and light of an unknown wavelength. The m = 4 bright fringe of the unknown wavelength overlaps the m = 3 bright orange fringe. What is the unknown wave- length?

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A double slit is illuminated simultaneously with orange light of wavelength 620 nm
and light of an unknown wavelength. The m= 4 bright fringe of the unknown
wavelength overlaps the m = 3 bright orange fringe. What is the unknown wave-
length?
Transcribed Image Text:A double slit is illuminated simultaneously with orange light of wavelength 620 nm and light of an unknown wavelength. The m= 4 bright fringe of the unknown wavelength overlaps the m = 3 bright orange fringe. What is the unknown wave- length?
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