A double slit is illuminated with visible light containing wavelengths from 400nm to 650nm. The screen is at a distance of 39cm from the slits. For the 400nm wavelength violet light, it is observed that the m = 1 maximum on the screen is at a distance of 3.10m from the m = 0 maximum. (a) What is the spacing between the slits? mm (b) What is the distance from the m = 0 to m = 1 maxima for the red 650nm wavelength light? cm