PHY 1122 Chapter Notes - Chapter 8: Double-Slit Experiment, Angular Distance, Polarizer
3 Mar 2015
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Phy1122 a discussion group april 8, 9 2015. In a young"s double slit experiment, the separation between the slits is 1. 20 10-4: the screen is located 3. 50 m from the slits. It is observed that the distance between the central bright fringe and the second-order bright fringe is 0. 0415 m. A point source of light ( = 589 nm) is placed at a distance z = 0. 4 mm above the mirror. Interference fringes are observed on a screen located at a distance l = 6 m from the source. Two perfectly flat glass plates (n = 1. 52) are separated at one end by a piece of paper 0. 041 mm thick. A lens which has an index of refraction of 1. 61 is coated with a non-reflective coating which has an index of refraction of 1. 45. Determine the minimum thickness of the film if it is to be non-reflecting for light of wavelength 560 nm.
