Based on your understanding of interference and diffraction, explain why you think the intensity profile of a double slit follows the pattern shown in the figure below? How do you think this pattern would change as (a) the separation between the slits changes and (b) the width of the two slits changes?

Based on your understanding of interference and diffraction, explain why you think the intensity profile of a double slit follows the pattern shown in the figure below? How do you think this pattern would change as (a) the separation between the slits changes and (b) the width of the two slits changes?