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  3. a thin film of ?g?2 has a refractive index n = 1.3

A thin film of ?g?2 has a refractive index n = 1.38 and it is deposited on...

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Physics

Athin film of ?g?2 has a refractive index n = 1.38 and it isdeposited on glass as an anti-reflective layer/stratum for lightwith wavelength 580nm that falls in the normal direction towardsthe film. What wavelength is minimally reflected when the lightfalls at 45 ° towards the film?

Answer & Explanation Solved by verified expert
3.7 Ratings (661 Votes)
To find the wavelength of minimally reflected light we firstfind the thickness of the thin filmThe condition for destructive interference in case of thin filmsfor normal incidence is given as followsn is refractive index of the thin filmt is thickness of the thin filmis wavelength of light incident    See Answer
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