Wave Optics

A monochromatic light of wavelength \(800 \mathrm{~nm}\) is incident normally on a single slit of width \(0.020 \mathrm{~mm}\) to produce a diffraction pattern on a screen placed \(1 \mathrm{~m}\) away. Estimate the number of fringes obtained in Young's double slit experiment with slit separation \(0.20 \mathrm{~mm}\), which can be accommodated within the range of total angular spread of the central maximum due to single slit.