What will happen if Young's double-slit experiment is performed in water?

What happens to fringe width in the Young's double slit experiment,if its is performed in glycerine insteaad of air?

What happens,if the monochromatic light used in Young's double slit experiment is replace by white light?

What will be the effect on the fringes formed in Young's double slit experiment, if the apparatus is immersed in water,

The width of one of the two slits in a Young's double slit experiment is double of the other slit.Assuming that the amplitude of the light coming rrom a slit is proportional to the slit width ,find the ratio fo the maximum to the minimum intenstiy in the interference pattern.

Show that in Young's double slit experiment for interference of light, the widths of the bright and dark fringes are equal.