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For more information, please see full course syllabus of AP Physics B
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Spherical Mirror

  • Spherical mirror: A piece of a glass sphere.
  • If the inner side is polished, then the spherical mirror is a concave mirror. If the outer surface is polished, it is a convex mirror.
  • The focal length of a spherical mirror is equal to R/2, where R is the radius of the sphere from which the mirror is taken (the radius of curvature).
  • The straight line from the center of the sphere to the mid point of the mirror is called the principal axis.
  • The mail mirror equation: 1/f = 1/p + 1/q.

Spherical Mirror

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Concave and Convex Mirror 0:17
    • Piece of Mirror From a Spherical Mirror
    • If Inner face is Polished, Concave Mirror
    • Principal Axix
    • Polished Outer Side, Convex Mirror
  • Focal Point 5:21
    • Consider a Concave Mirror
    • Sending a Ray of Parallel Light
    • Paraxial Rays
  • Ray Diagrams 19:10
    • Concave Mirror
    • Principal Axis
    • Rays Diverging Virtual Image
  • Image Formation in Concave Mirrors: Real Object 30:20
    • Real Object
    • Draw a Ray to Principal Axis
    • Put the Object beyond F
  • Image Formation in Concave Mirrors: Virtual Object 46:44
    • Rays Leaving the Image: Diverging
  • Summary of Concave Mirror 56:17
    • Real Object real Image
    • Real Object Virtual Image
    • Virtual Object Real Image
    • Virtual Object Virtual Image
  • Extra Example 1: Concave Mirror Image Location
  • Extra Example 2: Concave Mirror Focal Length
  • Extra Example 3: Concave Mirror Image Location