4 When a film of transparent material of thickness 2 5x10 3

Last updated: 6/24/2023

4 When a film of transparent material of thickness 2 5x10 3 cm is placed over one of the slit in YDSE The fringe pattern shifts by a distance equal to 20 fringes widths The R I of material of the film is 5000 A 1 1 25 3 1 40 In VD with light 2 1 35 4 1 50