34. Wave Optics
Single Slit Diffraction
34. Wave Optics Single Slit Diffraction
16PRACTICE PROBLEM
Two half-razor blades are placed side by side, with a narrow space between them, to form a single slit of width a. A monochromatic beam of wavelength 0.520 μm passes through the slit. On a board placed very far from the blades, a Fraunhofer diffraction pattern is observed. The first dark fringe is visible at θ=±π/2 rad. i) Determine the width of the formed slit and ii) the ratio of the intensity observed at θ=π/6 to the intensity of the central bright fringe I0.
Two half-razor blades are placed side by side, with a narrow space between them, to form a single slit of width a. A monochromatic beam of wavelength 0.520 μm passes through the slit. On a board placed very far from the blades, a Fraunhofer diffraction pattern is observed. The first dark fringe is visible at θ=±π/2 rad. i) Determine the width of the formed slit and ii) the ratio of the intensity observed at θ=π/6 to the intensity of the central bright fringe I0.