Find the range in nanometers of visible wavelengths of light in Plexiglas (n = 1.51). (Assume visible light has wavelengths ranging from 380 nm to 760 nm in a vacuum.) shortest wavelength nm longest wavelength nm
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1-
When electro magnetic waves enter a medium from vacuum wavelength decreases .
,
where = wavelength of light in medium , = wavelength in vacuum , n = refractive index of medium
= 380 nm (for short wavelength)
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