3. Consider the interference pattern produced by two slits of width at and separated by a distance d, where d = 3a. The slits are illuminated by normally incident light with wavelength one fth the slit separation (lat/5). (a) Let's rst ignore diffraction effects due to the slit width. At what angles would you expect to see 2-source interference maxima? List all angles 90 S I9 5 90. [Numeric values for the angles can be obtained from information stated in this question]