Maximum intensity in YDSE is I0, Find the intensity at a point on the screen where
(a) the phase difference between the two interfering beams is pi/3
(b) the path difference between them is λ/4
(a) we have
Here Imax is I0 (i.e., intensity due to independent sources is I0/4). Therefore, at
(b) Phase difference corresponding to the given path difference Δx = λ/4 is