A.Light of 578nm wavelength is directed at a two-slit apparatus and produces a famous intensity pattern on a screen 75.0cmaway. Each slit is 0.434mmwide, and the center-to-center separation of the slits is 0.640mm.
Given that the intensity at the very center of the pattern is 4.30×10-4 W/m2 , determine the intensity at a point a distance 0.770 mm , measured along the screen, from the very center.
Express your answer to three significant figures and include the appropriate units.