Images in Curved Mirrors

1. Images in Curved Mirrors

2. Types of Curved Mirrors: • Concave: • Inner surface of curved mirror is reflective • Convex: • Outer surface of curved mirror is reflective

4. Draw this…

5. Terminology • Centre of Curvature (C) • Centre of the sphere whose surface is used to make the mirror • Principal Axis (PA) • Line going through the centre of curvature and the centre of the mirror • Vertex (V) • Point where the PAintersects the mirror

6. Focus (F) • The point where parallel light rays come together or converge on a concave mirror

7. Concave Mirrors • Light rays CONVERGE in front of mirror and meet at focus • Produce various images depending on the location of the object • Used as makeup mirrors and in magic acts

8. Real Image • An image that can be seen on a screen as a result of light rays actually arriving at the location

9. Convex Mirror • Light rays DIVERGE on the mirror and meet at a virtual focus behind the mirror • Large viewing area but can cause some distortion • Used to view large areas like in a variety store

10. AKA “Diverging Mirror”

11. Locating Images in Converging (Concave) Mirrors • Draw two incident light rays from the top of the object • One parallel to the PA, then through F • One through F, then parallel to the PA • The point where the two reflected rays intersect is where the image will form

13. F C V

14. Object beyond C S- smaller A- invertedL- b/t F and C T- real S- A- L- T-

15. Object at C S- same A- invertedL- at C T- real S- A- L- T-

16. Object between F and C S- larger A- invertedL- beyond C T- real S- A- L- T-

17. Object at F • Reflected rays do not intersect • If you extend the rays behind the mirror, rays do not intersect S- A- L- T- *no clear image forms*

18. Object between V and F S- larger A- uprightL- behind mirror T- virtual S- A- L- T-