Question: Reflections from a thin layer of air between two glass plates cause constructive interference for a particular wavelength of light A. By how much must

Reflections from a thin layer of air between two glass plates cause constructive interference for a particular wavelength of light A. By how much must the thickness of this layer be increased for the interference to be destructive?

A. λ/8 B. λ/4

c. λ/2 D. λ

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