light of wavelength in air is ? in air is incident on a thin film of...
light of wavelength in air is ? in air is incident on a thin film of refractive index n=1.5 whose thickness varies with height. the interference pattern observed from the left hand side of the film is shown in the diagram. by what amount does the film thickness change between points A and B?
1.33? 2? 2.66? 3? 4?
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light of wavelength in air is ? in air is incident on a thin
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