two coherent light sources A and B are at distance 3lambda on y axis such that A is at origin - Physics - Wave Optics

Question

two coherent light sources A and B are at distance 3lambda on y
axis such that A is at origin The distance from A on the x axis at
which the interference is constructive is

Kunika Agrawal · Answer

Here is your answer
<img src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_5ccb09bf69dc8%20jpeg">

two coherent light sources A and B are at distance 3lambda on y axis such that A is at origin. The distance from A on the x axis at which the interference is constructive is