Physics - Wave Optics Question with Solution | TestHub

In theYDSEshown below, two slits are covered with thin sheets having a thickness$t$and$2t$and refractive indices$2\mu$and$\mu$respectively. The position of central maxima is shifted by a distance of$N$(in$\mathrm{cm}$) from the central position of the screen. Find the value of$N$.
$[d = 1 \mathrm{mm}; D = 1 \mathrm{m}; t = 2 \times {10}^{-2} \mathrm{mm},$$\mu =\frac{3}{2}$]