Physics - Wave Optics Question with Solution | TestHub

In a Young's double slit experiment, the slits are 2 mm apart and are illuminated with a mixture of two wavelength ${\lambda }_0=750\mathrm{nm}$ and $\lambda =900\mathrm{nm}$. The minimum distance (in mm) from the common central bright fringe on a screen 2 m from the slits where a bright fringe from one interference pattern coincides with a bright fringe from the other, is :-