Question

A pair of narrow, parallel slits separated by 0.234 mm are illuminated by the green component from a mercury vapor lamp (ë=531.5 nm). The interference pattern is observed on a screen 1.21 m from the plane of the parallel slits.

a)Calculate the distance from the central maximum to the first bright region on either side of the central maximum.

b)Calculate the distance between the first and second dark bands in the interference pattern.