focus - A point on the principal axis where all the reflected beams of light are converged. Denoted by letter 'F, focal length - The distance between Pole (P) and Focus (F), pole - the center point of the reflecting surface, center of curvature - The center of sphere formed by spherical mirrors, principal axis - An imaginary straight line passing through the Centre of Curvature and Pole,

Components of Spherical Mirror

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