Physics - Wave Optics Question with Solution | TestHub

distance between slit and eyepiece. When the distance between two virtual sources is changed from ${\mathrm{d}}_{\mathrm{A}}$ to ${\mathrm{d}}_{\mathrm{B}}$, then the fringe width is changed from ${\mathrm{Z}}_{\mathrm{A}}$ to ${\mathrm{Z}}_{\mathrm{B}}$. The ratio ${\mathrm{Z}}_{\mathrm{A}}$ to ${\mathrm{Z}}_{\mathrm{B}}$ is