Unit 7 · Energy in Daily LifeRay diagram for concave and convex mirror
Words of this topic
- Concave mirror: a spherical mirror whose reflecting surface curves inwards, away from the object.
- Convex mirror: a spherical mirror whose reflecting surface bulges outwards, towards the object.
- Pole P: the point at the very middle of the reflecting surface of the mirror.
- Centre of curvature C: the centre of the sphere of which the mirror is a part.
- Focus F: the point where rays parallel to the principal axis gather, or seem to gather, after reflection.
- Principal axis: the straight line joining the pole P and the centre of curvature C.
- Real image: an inverted image that can be caught on a screen.
- Virtual image: an erect image that cannot be caught on a screen.
- Inverted: standing head downwards.
- Erect: standing head upwards, the same way up as the object.