Question

OA You have two sits of width a, a distance d apart. You shine light with a wavelength of 575 nm on the slits. On a screen 3.50 m from the slits, the 8th order interference dark fringe is 6.11 cm from the center of the screen. The 5th order diffraction dark fringe is 12.6 cm from the center of the screen. a) What is the distance between the slits d? b) What is the width of the slits a? The distance between the slits is 1.36 x 104 B. The distance between the slits is 2.64 x 10-4 m The distance between the slits is 9.84 x 10-7m D. The distance between the slits is 2.80 x 104 m CE The distance between the slits is 1.28 x 10-4 m OR The width of the slits is 7.99 x 10-5 m The width of the slits is 1.65 x 104 m H. The width of the slits is none of these answers The width of the slits is 1.81 x 104 m The width of the slits is 8.78 x 105 m G.

Answer 1

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# for part(a) negrest option has been choosen. >= 575 nm, D=3.5m, x=6.11cm N-8. {12= 12.6cm NE5 a) Distance of 8th danke fringe =X,= (2N-XD ad X = 6·11x1 = (2x 8-1) x 575x15x3.5 20 = d = 2.47X10tm Aul (slits separation) b) Distance of 5th cook fringe in diffraction, %= 520 12.6XT?? - 54575X10X3.5 a=7.9868105 1 width of the slit clearly, options (B) and (F) are correct And Note