Physics - Wave Optics Question with Solution | TestHub

In Young's double slit experiment, the $6^{\text{th }}$ maximum with wavelength ${}^{\prime }{\lambda }_1{}^{\prime }$ is at a distance ${}^{\prime }{\mathrm{d}}_1{}^{\prime }$ from the central maximum and the $4^{\text{th }}$ maximum with wavelength ${\lambda }_2$ is at distance ${\mathrm{d}}_2$. Then $\frac{{\mathrm{d}}_1}{{\mathrm{d}}_2}$ is