Question

A.A pair of narrow, parallel slits separated by a distance of 0.335 mm are illuminated by green laser light with wavelength = 543.0 nm. The interference pattern is observed on a screen 2.43 m from the plane of the parallel slits. Calculate the distance from the central maximum to the first bright region on either side of the central maximum.

B.What is the distance between the first and second dark bands in the interference pattern?