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Parallel ray in concave mirror?
Passes through F.
What is focal length?
Distance between P and F.
What is light?
A form of energy that helps us see objects.
What is principal axis?
Line joining P and C.
What is Centre of Curvature (C)?
Centre of the sphere of which mirror is a part.
What is Focus (F)?
Point where parallel rays meet or appear to meet.
What is Pole (P)?
Centre of mirror surface.