1 When a thin transparent plate of refractive index 1 5 is

Last updated: 6/26/2023

1 When a thin transparent plate of refractive index 1 5 is introduced in one of the interfering beams a shift of 20 fringes is observed If it is replaced by another thin plate of half the thickness and of refractive index 1 7 the number of fringes that will be 1 23 3 28 4 7 undergo shift EN PAR