5 Two coherenet sources are 0 18 mm apart and the fringes

Last updated: 5/29/2023

5 Two coherenet sources are 0 18 mm apart and the fringes are abserved on a screen 80 cm away It is found that with a certain monochromatic source of light the fourth bright fringe is situated at a distacne of 10 8 mm from the central fringe The wavelength of light in A is