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Understanding Convex Mirrors: Types, Applications, and Image Formation

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20 diapositives · 368 Views · Jul 30, 2014

Explore the fascinating world of convex mirrors, commonly used in vehicle rear-view mirrors for safety and enhanced visibility. This resource discusses how convex mirrors create virtual images that appear closer than they are, their uses in security and side mirrors, and the principles of ray diagrams. Learn about the characteristics of real and virtual images, and complete the accompanying "SALT" table for a better understanding of image formation. Enhance your knowledge of optics with practical applications and clear diagrams.

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Transcription de la présentation
  1. Supplies: Print: 11 • Demo:

  2. Concave Review

  3. SALT • Size of IMAGE (compared to object) • Attitude • Location • Type

  4. Concave Review

  5. Warmup “Objects in the rearview mirror may appear closer than they are.” • What kind of mirror do you suppose is used in a rear-view mirror for he driver and passenger of a vehicle? • Why do you suppose they use this type of mirror? • Why do objects appear closer?

  6. Images in Spoons Complete the diagram below and the “SALT” Table

  7. Convex Mirror

  8. Convex Mirror

  9. Convex Mirror

  10. Convex Mirror Draw a stick-man to the right of a convex mirror. Use a ray-diagram to depict his image

  11. Convex Mirror Draw a an object of your choice to the right of a convex mirror. Use a ray-diagram to depict his image

  12. Convex Mirrors • Now the F (virtual focus) and C are behind the mirror • Light rays seem to come from an apparent light source behind the mirror (virtual image)

  13. Uses of Convex Mirrors Security Mirrors Side Mirrors

  14. Rules for Drawing Images • A ray parallel to the principal axis is reflected as if it had come through the focus • A ray aimed at the centre of curvature is reflected back upon itself • A ray aimed at the focus is reflected parallel to the principal axis

  15. Diagram 1

  16. Diagram 2

  17. Diagram 3

  18. Real & Virtual Images • Real image = an image that appears in front of the mirror and can be projected onto a screen • Virtual image = an image that appears to be behind the mirror and cannot be projected onto a screen

  19. Summary of Types of Images

  20. Convex Mirrors • http://www.edumedia-sciences.com/en/a309-convex-mirror