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physics
spherical mirrors
Term | Definition |
---|---|
what is pole | the center of a spherical mirror |
centre of curvature | the centre of the sphere from which the mirror is made ,C is the centre of curvature |
axis | the straight line joining the pole of the centre of curvature |
focus | th e point half way between the cemtre of curvature and the pol |
focal length | the distance from the focus to the pole is called focal length |
Real image | a real image is an image formed by the actual intersection of the light rays |
Virtual image | is an image formed by the apparent intersection of rays |
magnification | the height of image is different from the height of the object |
1/u +/v=1/f and m =u/v | for a treatment using waves and the curvature of th lens |