JEE Main & Advanced
JEE Main Online Paper (Held On 08 April 2018)
question_answer
The angular width of the central maximum in a single slit diffraction pattern is \[\text{60 }\!\!{}^\circ\!\!\text{ }\]. The width of the slit is \[\text{1}\,\,\,\mu \text{m}\]. The slit is illuminated by monochromatic plane waves. If another slit of same width is made near it. Youngs 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.) [JEE Main Online 08-04-2018]