A thin film of MgF2MgF2 (n� = 1.38) coats a piece of glass. Constructive interference is observed for the reflection of light with wavelengths of 500 nmnm and 667 nmnm .     Part A What is the thinnest film for which this can occur?

Physics for Scientists and Engineers: Foundations and Connections
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ISBN:9781133939146
Author:Katz, Debora M.
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Chapter35: Diffraction And Interference
Section: Chapter Questions
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A thin film of MgF2MgF2 (n� = 1.38) coats a piece of glass. Constructive interference is observed for the reflection of light with wavelengths of 500 nmnm and 667 nmnm .
 
 
Part A
What is the thinnest film for which this can occur?
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