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). (Iambda2 refers to the wavelength of the light inside the thin film. ) d= lambda 2 / 2, material 1 is air, 2 is water, 3 is glass. d= lambda 2 / 2, material 1 is glass, 2 is air, 3 is water. 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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