Light with a wavelength of 597 nm
passes through a sheet in which there are two parallel narrow slits 7.64 μm
apart. The light from the slits is incident on a screen parallel to the sheet, where a pattern of light and dark fringes is observed. A line 𝐿 runs perpendicular to the surface of the sheet and the direction of the
slits, intersecting the
central bright fringe of the pattern on the screen. Two lines, line I and line
II, intersect 𝐿 at the position of
the sheet. Line I intersects the center of the dark fringe closest to the
central bright fringe and line II intersects the center of the bright fringe
closest to the central bright fringe. Both lines I, and II are on the same side with respect to line 𝐿 . What is the angle between line I and line
II? Give your answer to one decimal place.