Two coherent sources separated by distance $d$ are radiating in phase having wavelength $\lambda$. A detector moves in a big circle around the two sources in the plane of the two sources. The angular position of $n=4$ interference maxima is given as

Q. Two coherent sources separated by distance $d$ are radiating in phase having wavelength $\lambda$. A detector moves in a big circle around the two sources in the plane of the two sources. The angular position of $n=4$ interference maxima is given as

Q. Two points sources separated by $2.0m$ are radiating in phase with $\lambda =0.50m$. A detector moves in a circular path around the two sources in a plane containing them. How many maxima are detected?

Q. An interference is observed due to two coherent sources $\text{A}\&\text{B}$ having zero phase difference separated by a distance $4\lambda$ along the $y-$axis where $\lambda$ is the wavelength of the source. A detector $\text{D}$ is moving on the positive $x-$axis. The number of points on the $x-$axis including the points $x=0$ & $x=\infty$ at which maxima will be deserved is-