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Define pole, principal axis, centre of curvature​

Answer» POLE: the centre of the reflecting surface of a spherical mirror is a point called the pole.CENTRE OF CURVATURE: the centre of curvatureof a spherical mirror is the centre of the hollow SPHERE of glass of which the mirror is a part.Explanation:principal axis in AMERICAN Englishnoun. 1. Optics. a line passing through the center of the surface of a LENS or spherical mirror and through the centers of curvature of all segments of the lens or mirror.


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