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Question No 9 (4+4 8 pts) Coherent light with wavelength A 600mm passes through two very nar- row slits and the intereference pattern is observed on a screen at R 3.00m from the slits. The first-order (m 1) bright fringe is at 4.84 mm from the center of the central bright (m 0) fringe. (a) How far apart(d) would the slits have to be? (b) Calculate the fring width ie. width of either bright or dark fring).
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Answer #1

Given: Goo mm To find the distance oF the slits ; o 004 343 x 60DxIo d =0.000371900 mm λ of first dark fringe aㅓ-o oo 484 m i

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