Final answer:
Increasing the distance between slits in a double-slit experiment with violet light leads to wider fringe spacing, an enlarged pattern overall, and possibly less sharp fringes on the simulation.
Step-by-step explanation:
When using violet light in a double-slit experiment and increasing the distance between the two slits, several changes can be observed in the interference pattern on the simulation. First, the spacing between the interference fringes will increase, resulting in a wider pattern. Second, the overall size of the pattern will enlarge, making the bright and dark fringes more spread out on the screen. Lastly, the visibility of the fringes might decrease, as the fringes could become less sharp with increased separation.