Wo slits separated by a distance of d = 0.155 mm are located at a distance of d = 2.40 m from a screen. the screen is oriented parallel to the plane of the slits. the slits are illuminated by a monochromatic and coherent light source with a wavelength of λ = 538 nm. a wave from each slit propagates to the screen. the interference pattern shows a peak at the center of the screen (m=0) and then alternating minima and maxima.