A film suspended in air has a spectrally-averaged transmittance of 0.886 in a non- absorbing region. Estimate the approximate value of the refractive index.
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![A film suspended in air has a spectrally-averaged transmittance of 0.886 in a non-
absorbing region.
Estimate the approximate value of the refractive index.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa303b5f8-6488-4989-8df3-bdae41015b1e%2F5d452a7f-452c-4e46-b033-6da4de2f1e02%2Flaherin_processed.png&w=3840&q=75)
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