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A thin film of MgF2 (n = 1.38) is deposited on glass so that for a...

A thin film of MgF2 (n = 1.38) is deposited on glass so that for a wavelength of 522nm it is antireflecting at incident angle of 30 degrees. What wavelength is minimally reflected at a normal incident angle?

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Please hit the like button ...if you have any doubt comment below I will resolve it ...Many Thanks

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