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Look for ... Labeled diagram, Proper variables, Proper Units, Proper Amount Of Significant Digits, Given, Required, Analysis, Starting Equations, Final Equation (NICE TO HAVE IT), Unit Analysis, Correct Answer, Neat. 3. [5K Double Slit Experiment] Two narrow slits separated by 1.0 mm are illuminated by 551 THz light. Find the distance between the first bright fringes on either side of the central maxima on a screen 5.0 m from the slits