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Convex Mirror
- Principal axis is the line through the centre of curvature and the pole of the mirror.
- Pole is the point where principal axis meets with mirror surface.
- Centre of curvature is the centre of sphere that the mirror forms part.
- Radius of curvature (r) is the radius of sphere.
- Principal focus is the point to which all rays parallel to the principal axis converge or from which they appear diverge.
- Focal length (f) is the distance between the pole and the principal focus.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjpYDyvnJwuBC86u9MCYEeEv7OhCNQxjOtUzktYByQRUUEXq3rmvWZ7OpCU4OMTdKVswIAnv0FPvlWoNIBLW4iaNM_Enf5qES93zjFgomvR-hMRD8aVfZ5f3DaxxL05qmGfA_Fh2HAP-qs/s400/ccmrs-eq01.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjahEQLZaWvYMz0cva5e4mpmDccU1g2erAWvhIRQoqTwffsqu9OTGMura-e5yfvHi3nXLpeXalEj3rUx4SM3mzWV5dD_rGh8EJIPkvN4TAmM9OJ-p7Jkk6OJrkW_Aja5aWdGYjhw9stLCs/s1600/mirror1.jpg)
- Parallel reflected rays converge at focal point.
- Real focus since the reflected rays actually pass through it.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMzi2_J48c_LmmZrRiKaG_lgenUdc_IuDs_U0ac7xWeZjM5AZin1CzPFwXnLoV9m_qzhNQztHs1cghPlq5e3u0laXKpkSrbBgDxL6fRbfgrwlgkj7Q8z8JWKy3dxAZfWE6ggyB8qJr7Uo/s1600/mirror2.jpg)
- Parallel reflected rays appear to diverge from focal point.
- Virtual focus since the reflected rays do not pass through it.
2 comments:
thank you,sir!!
thx for the notes!!
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