Physics - Wave Optics Question with Solution | TestHub

Two coherent point sources${\mathrm{S}}_1$and${\mathrm{S}}_2$vibrating in phase emit light of wavelength$\mathrm{\lambda }$. The separation between the sources is$2\mathrm{\lambda }$. The smallest distance from${\mathrm{S}}_2$on a line passing through${\mathrm{S}}_2$and perpendicular to${\mathrm{S}}_1{\mathrm{S}}_2$where a minimum intensity occurs is