Review for Test #2  Responsible for: - Chapters 37 and 38 (and 35, 36, 34.60) - Notes from class - Problems worked in class - Homework assignments  Test format: - 18 multiple-choice problems (5.56 points each) - 2 bonus problems (5 points each) - Time: 75 minutes  Test materials: - Pencil, eraser, and non-programmable calculator - No formulae sheetor paper; all provided - Closed textbook and notes

Material Covered  Chapters 37: Interference of Light Waves - Superposition of waves, path difference - Young’s double experiment, bright & dark fringes - Intensity distribution - Phasor addition, phasor diagrams - Phase change by reflection - Thin films, interferometers  Chapter 38: Diffraction and Polarization - Single slit diffraction, dark fringes, intensity - Resolution of single slits, circular apertures - Diffraction gratings, resolving power - X-ray diffraction of crystals - Polarization of light rays, methods - Brewster’s angle Scores available by the following Tuesday

Example Problem How far above the horizon is the Moon when its image reflected in calm water is completely polarized? (Take n=1.33 for water).