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wrote...
Valued Member
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Posts: 3560
12 years ago
If the wavelength of light in vacuum is 469 nm, what is the wavelength of light in a thin film of index of refraction 1.42?
A) 110 nm
B) 220 nm
C) 330 nm
D) 440 nm
E) 550 nm
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Trusted Member
12 years ago
C
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