In a young s double slit experiment the slits are

Last updated: 6/26/2023

In a young s double slit experiment the slits are illuminated by monochromatic light The entire set up is immersed in pure water Which of the following act cannot restore the original fringe width 1 bringing the slits close together 2 moving the screen away from the slit plane 3 replacing the incident light by that of a longer wavelength 4 introducing a thin transparent slab in front of one of the slits