This physics video tutorial on optics provides a basic introduction into ray diagrams. It explains how to draw ray diagrams for converging lens, diverging lens, concave mirrors, and convex mirrors. It explains how to distinguish a real image from a virtual image and how to tell if an image is upright, inverted, enlarged or reduced in size.

Law of Reflection - Geometric Optics:
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The Mirror Equation:
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Refraction of Light:
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Snell's Law & Index of Refraction:
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Total Internal Reflection & Critical Angle:
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Thin Lens Equation:
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Ray Diagrams:
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The Huygens Principle:
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Young's Double Slit Experiment:
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Single Slit Diffraction:
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Diffraction Grating Problems:
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Polarization of Light Problems:
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Final Exams and Video Playlists:
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Full-Length Videos and Worksheets:
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