24. (1 point) A 103 nm thick transparent film (n = 1.38) is deposited an a glass

Question

24. (1 point) A 103 nm thick transparent film (n = 1.38) is deposited an a glass plate (n = 1.52). Light with certain wavelength will undergo destructive thin film interference. What is the longest possible wavelength (in vacuum) of light that will not be seen as reflected light because of this effect? a. 434 nm b. 496 nm c. 569 nm d. 628 nm e. 664 nm Hint: Rays 1 and 2 both undergo 1/2 phase shift upon reflection, so this effect does not contribute to the net phase shift. The total phase shift is dues to the path difference.

Explanation / Answer

i choose that D

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