Two parallel narrow horizontal slits in an opaque vertical

Last updated: 6/21/2023

Two parallel narrow horizontal slits in an opaque vertical screen are separated center to center by d 5 mm These are directly illuminated by yellow plane waves from a filtered discharge lamp Horizontal fringes are formed on a vertical viewing screen 13 m from the aperture plane The center of the fifth bright band is y 3 mm above the center of the zeroth central bright band a 10 points Determine the wavelength Ao of the light in air Xo b 10 points If the entire space is filled with a special type of oil having a index of refraction n special 1 356 where would the fifth fringe now appear find y y