Problem 7: For the double-slit experiment described in Problem 6, how many bright finges, in total, will be obervable on the screen? (Include in your count the central bright fringe, as well as every bright fringe to either side of the central one.) (A) 9 (в) 8 (C) 10 (D) 7 (E) 5 Problem 6: If a double-slit is illuminated at normal incidence by coherent (laser) light it produces, on a screen parallel to and far away from the slits, its 3rd dark fringe (=intensity minimum), at an angle of +36.0°, measured from the central bright fringe (=intensity maxi- mum). At what angle, 0, measured from the central bright fringe, will the 2nd dark fringe appear? (All dark fringes are counted here from the central bright one, going outward. So, the 1st dark fringe is the one closest to the central bright one.)

Problem 7: For the double-slit experiment described in Problem 6, how many bright finges, in total, will be obervable on the screen? (Include in your count the central bright fringe, as well as every bright fringe to either side of the central one.) (A) 9 (в) 8 (C) 10 (D) 7 (E) 5 Problem 6: If a double-slit is illuminated at normal incidence by coherent (laser) light it produces, on a screen parallel to and far away from the slits, its 3rd dark fringe (=intensity minimum), at an angle of +36.0°, measured from the central bright fringe (=intensity maxi- mum). At what angle, 0, measured from the central bright fringe, will the 2nd dark fringe appear? (All dark fringes are counted here from the central bright one, going outward. So, the 1st dark fringe is the one closest to the central bright one.)