What is the ratio of curvature of convex mirror to that of concave mirror of same foci?
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Rays of light parallel to the principal axis of a concave mirror will appear to converge on a point in front of the mirror somewhere between the mirror's pole and its center of curvature. That makes this a converging mirror and the point where the rays converge is called the focal point or focus .
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introduction.
f ≈ r
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