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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:


The Mirror Equation:


Refraction of Light:


Snell's Law & Index of Refraction:


Total Internal Reflection & Critical Angle:


Thin Lens Equation:


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Ray Diagrams:


The Huygens Principle:


Young's Double Slit Experiment:


Single Slit Diffraction:


Diffraction Grating Problems:


Polarization of Light Problems:


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