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Physics Form 4: Chapter 5 - Introduction to Curved Mirror

**Concave Mirror **
**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.

- Parallel reflected rays converge at focal point.
- Real focus since the reflected rays actually pass through it.

- 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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