In YDSE arrangement shown in figure fringes are seen on

Last updated: 6/11/2023

In YDSE arrangement shown in figure fringes are seen on screen using monochromatic source Shaving wavelength 3000A in air S and S are two slits separated by d 1mm from each other and D Im Left of slits S and S medium of refractive index 2 is present to the right of slits S and S 13 medium of refractive index is present A thin slab of thickness is placed in front of S The refractive index of slab varies with distance x from its starting face as shown in figure D im Lun d 2 D 1m H Screen h In order to get central maxima at the centre of the screen O the thickness of slab required is B Tum 0 5mm