In a Young\'s double slit experiment, the fringe width is found to be `0.4mm`
Channel: Doubtnut
Date: 2020-01-19

In a Young\'s double slit experiment, the fringe width is found to be `0.4mm`. If the whole apparatus is immersed in water of refractive index `4//3` without disturbing the geometrical arrangement, the new fringe width will be