Monochromatic Light, at Normal Incidence, Strikes a Thin Film in Air.If

question 43

Multiple Choice

Monochromatic light, at normal incidence, strikes a thin film in air.If $\lambda$ denotes the wavelength in the film, what is the thinnest film in which the reflected light will be a maximum?

• A)"much less than \(\lambda\)"
• B)"\(\lambda\)/4"
• C)"\(\lambda\)/2"
• D)"3\(\lambda\)/4"
• E)"\(\lambda\)"

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