A Parallel beam of white light is incident on a thin film of air of un – InterviewSolution

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1.	A Parallel beam of white light is incident on a thin film of air of uniform thickness. Wavelengths 7200˙A and 5400˙A are observed to be missing from the spectrum of reflected light viewed normally. The other wavelength in the visible region missing in the reflected spectrum is
Answer» A Parallel beam of white light is incident on a thin film of air of uniform thickness. Wavelengths $7200 ˙ A$ and $5400 ˙ A$ are observed to be missing from the spectrum of reflected light viewed normally. The other wavelength in the visible region missing in the reflected spectrum is

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