The diagram shows light incident from above on a film of thickness d. Each of th

Question

The diagram shows light incident from above on a film of thickness d. Each of the three materials in the figure can be chosen to be air, with index of refraction n = 1. 00, water, with index n = 1. 33, or glass, with index n = 1. 50. Under which of the following conditions will the reflected light be nearly eliminated by interference? Give ALL correct answers (i. e. A, BCD, BC). ( lambda 2 refers to the wavelength of the light inside the thin film. ) d= lambda 2 / 4, material 1 is air, 2 is glass, 3 is air. d= lambda 2 / 2, material 1 is air, 2 is water, 3 is glass. d= lambda 2 / 4, material 1 is air, 2 is water, 3 is glass. d

Explanation / Answer

a)d-lamda/4.material air=1,glass=2,air=3

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