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Spherical Mirrors

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Spherical Mirrors
Spherical Mirror :A curved mirror formed by a part of a hollow glass sphere with a reflecting surface (created by depositing silver metal) is also referred to as a spherical mirror. Concave Mirror:A concave mirror is a curved mirror with the reflecting surface on the hollow side (created by depositing silver metal on the outer curved side).

Convex Mirror : A convex mirror is a curved mirror
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with the reflecting surface on the outerside.
Centre of Curvature : The centre of curvature of a curved mirror is defined as the center of the hollow glass sphere of which the curved mirror was (previously) a part.

Radius of curvature The radius of curvature of a curved mirror is defined as the radius of the hollow glass sphere of which the spherical mirror was (previously) a part. Note that any line drawn from the center of curvature C to the mirror surface meets it at right angle and equals the radius of curvature.

Principal Axis :The principal axis of a curved mirror is defined as the imaginary line passing through its pole P and center of curvature C.
Focus :The principal focus is defined as the point on the principal axis where the light rays traveling parallel to the principal axis after reflection actually meet (for a concave mirror) or appear to meet (for a convex mirror).
Pole : The pole is defined as the geometric center of the curved mirror. Rules of Reflection for Curved Mirrors
 1. Any light ray traveling parallel to the principal axis is reflected by the curved mirror through the principal focus.
It either actually passes (for a concave mirror) or appears to pass (for a convex mirror) through the principal focus.
 2. Any light ray that passes (for a concave mirror) or appears to pass (for a convex mirror) through the principal focus is reflected by the curved mirror parallel to the principal axis.
 3. Any light ray that passes (for a concave mirror) or appears to pass
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