In a Young's double-slit experiment, the wavelength of the light used is 520 nm (in vacuum), and the separation between the slits is
1.4×10−6m1.4×10−6m
Determine the angle that locates (a) the dark fringe for which m = 0, (b) the bright fringe for which m = 1, (c) the dark fringe for which m = 1, and (d) the bright fringe for which m = 2.