Question 5: …
Question 5: (4) At a reciprocal vector of u, the contrast transfer function is zero, the effect on the image is to: Extinguish the fringes of spacing u Extinguish the fringes of spacing 1/u Reverse the contrast of fringes of spacing u Reverse the contrast of fringe of spacing 1/u It depends on how other values of u are affected so that the fringe visibility can be determined.
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