4 A soap film of RI 1 33 and thickness t is illuminated by

Last updated: 6/25/2023

4 A soap film of RI 1 33 and thickness t is illuminated by light of wavelength lamda incident at an angle 60deg The minimum thickness to observe the dark band at viewing angle 60deg for wavelength lamda is 3 Points lamda 5 x 10 5 cm 2 5 x10 5 cm 2 5x10 7 cm O 0 25micron