Images in Curved Mirrors all mirrors are not

Images in Curved Mirrors all mirrors are not flat. . .

Can you think of examples of curved mirrors? • Flashlights • Makeup mirrors • Security mirrors

2 Types of Curved Mirrors • Concave • Convex Pg 496

Concave Mirror • Also known as a converging mirror • Caves in • Middle bulges away from you

Convex Mirror • Also known as a diverging mirror • Caves OUT • Middle bulges TOWARDS you

Concave Mirrors • Reflected rays always converge in a concave mirror • This is why they are also called converging mirrors Pg 496

TERMS

Centre of Curvature (C) • Centre of the sphere • It is 2 times the length of the focus (F) Pg 496

Focus (F) Pg 496 • A point where parallel light rays come together (converge)

Principle Axis (P. A. ) • A line through the centre of curvature to the midpoint of the mirror Pg 496

Vertex (V) • The point where the principle axis meets the mirror Pg 496

How to locate the Image in a Concave Mirror 1. From the top of the object, draw a light ray parallel to the P. A. • When it hits the mirror, it should reflect through the focus

How to locate the Image in a Concave Mirror 2. From the top of the object, draw a light ray through the focus • When it hits the mirror, it should reflect back, parallel to the P. A.

How to locate the Image in a Concave Mirror 3. Where the two light rays intersect (cross) that represents the top of the image • Draw in your image

Try it out: Draw the focus 4 cm from the vertex. So this means C will be 8 cm from the vertex (2 F). Find the reflected image.

Real Image Virtual Image q an image that is formed IN FRONT of the mirror q. The image can be projected on a screen q an image that is formed BEHIND the mirror q. The image CANNOT be projected on a screen

Summary of Images in a Concave Mirror Pg 499