Physics - Wave Optics Question with Solution | TestHub

In Young's double slit experiment the separation$d$between the slits is$\mathrm{2\; mm,}$the wavelength$\lambda$of the light used is$5896 \mathrm{Å}$and distance$D$between the screen and slits is$\mathrm{100\; cm.}$It is found that the angular width of the fringes is$0.20°$. To increase the fringe angular width to${0.21}^o$(with same$\lambda \text{and}\mathrm{ }D$) the separation between the slits needs to be changed toNEET 2018