JEE Main 2018Session, Shift 1PhysicsHardOptics190× since 2002
The angular width of the central maximum in a single slit diffraction pattern is 60°. The width of the slit is
1 m. The slit is illuminated by monochromatic plane waves. If another slit of same width is made near it,
Young’s fringes can be observed on a screen placed at a distance 50 cm from the slits. If the observed
fringe width is 1 cm, what is slit separation distance?
(i.e. distance between the centres of each slit.)