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Understanding the Ray of Incidence and Reflection in Plane Mirrors

This guide explores the concepts of the ray of incidence, reflection, and the properties of images in plane mirrors. It includes a step-by-step explanation of drawing a normal line and a mirror, as well as how to measure the angles of incidence (∠i) and reflection (∠r). With clear illustrations, it shows how an object is represented in a mirror and demonstrates the equality of angles (∠i = ∠r). Learn how to properly visualize and measure reflections using geometric principles, enhancing your understanding of optics.

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Understanding the Ray of Incidence and Reflection in Plane Mirrors

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Presentation Transcript

  1. What is the ray of incidence? A B C D Next slide

  2. Drawing a normal Draw the normal as a dotted line Draw a mirror as a straight line Put yougeometrytriangle on the mirrorPerpendicularly mirror Normal

  3. Reflection in plane mirrors Drawing an image in the mirror image object mirror

  4. Reflection in plane mirrors Measure∠i ∠i= ∠r ∠i = 36° Normal ∠r = 36°

  5. Reflection in plane mirrors How do you look into a mirror? Mirror image Girl

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