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ray optics - Coggle Diagram

- - - - in which rays of light starting from a point travel in different directions
    - - in which rays of light coming from different directions meet at a point
    - - in which light rays are parallel to each other
- - - - geometric center
    - - center of sphere of which mirror is part of
    - - radius of sphere (distance between center of curvature and pole) of which mirror is part of
    - - straight imaginary line joining pole and center of curvature
    - - point on principal axis where rays incident parallel to principal axis converge or appear to diverge from after reflection
    - - distance of focus from pole
      - radius of curvature/2