Thank you for reporting, we will resolve it shortly
Q.
Interference fringes are being produced on screen $X Y$ by the slits $S_{1}$ and $S_{2} .$ In figure, the correct fringe locus is
Wave Optics
Solution:
Interference fringes are bands on screen $X Y$ runnings parallel to the lengths of slits. Therefore, the locus of fringes is represented correctly by $W_{3}\, W_{4}$.