Solution

Question\n\nCoherent light with wavelength $450\,\mathrm{nm}$ falls on a pair of slits. On a screen $1.80\,\mathrm{m}$ away, the distance between dark fringes is $3.90\,\mathrm{mm}$. What is the slit separation?\n\nContent coming soon. Write the full solution here, or use the part files (p-i.mdx, p-ii.mdx, …) for each part.