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Laws
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Angle of reflection = angle of incidence
- r = i
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Same plane
- incident ray
- normal
- reflected ray
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Image
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Real
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actual intersection
- light rays
- Inverted
- Can be formed on screen
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Virtual
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Apparent intersection
- light rays
- erect
- cannot be formed on screen
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Mirrors
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terms
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Pole of mirror
- P
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Center of curvature
- C
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Radius of curvature
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CP
- CP = 2FP
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focus
- F
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focal length
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FP
- CP = 2FP
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Types of mirrors
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Convex
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Uses
- Headlamps
- flashlights
- Shaving mirrors
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Concave
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Rules
- Rays parallel to principal axis are reflected back through focus
- Rays passing through focus are reflected to principal axis
- Rays of light from Center of Curvature are reflected back along own path
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Uses
- buses
- shops
- junctions
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Diagrams
- Chapter 1