Mirror Formula

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Concave mirror formula (paraxial) is?

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1. **Mirror Equation**: This relates object distance ($u$), image distance ($v$), and focal length ($f$) for spherical mirrors.
2. **General Formula**: **$\frac{1}{v} + \frac{1}{u} = \frac{1}{f}$**.
3. **Property**: This formula applies to both concave and convex mirrors, provided correct sign conventions are used.
4. **Focal Length**: For a concave mirror, $f$ is negative (left of the vertex). For a convex mirror, $f$ is positive.
5. **Magnification Link**: Linear magnification for mirrors is given by $m = -v/u$.

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