Physics - Wave Optics Question with Solution | TestHub

Two identical narrow slits${\mathrm{S}}_1$and${\mathrm{S}}_2$are illuminated by the light of a wavelength$\lambda$from a point source$\mathrm{P}$.



If, as shown in the diagram above, the light is then allowed to fall on a screen, and if$n$is a positive integer, the condition for destructive interference at$\mathrm{Q}$is