What name is given to LINEAR distance between the pole and principal focus of a spherical mirror?
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Radius of curvature
(b) Radius of curvature is the linear distance between the pole and the centre of curvature. (c) Pole is the mid point of a spherical mirror. (d) Principal axis is an imaginary line passing through the pole and the centre of curvature of a spherical mirror.
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Light rays that are parallel to the principal axis of a concave mirror converge at a specific point on its principal axis after reflecting from the mirror. This point is known as the principal focus of the concave mirror. Hence, the focal length of the given spherical mirror is 10 cm.
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