The image below is a sketch of two-slit diffraction of light. narrow slits at a and b act as wave sources, and waves interfering in various phases are shown at c, d, e, and f. a sketch of two-slit diffraction of light. narrow slits at a and b act as sources on the left, and waves interfering in various phases are shown at c, d, e, and f on the right. the equation for the double-slit experiment for small angles is equation showing lambda divided by d equals x divided by l in the image, which description below represents the l of the equation? the distance between a and b the distance between a and d the distance between midpoints d, e, and f the light bands between d and e and f