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Learning Outcome Draw a ray diagram to find the position, nature and size of the image produced by a concave and convex mirrors
Plane Mirrors Eye sees image back hereImage is virtual and laterally inverted Light from object reflects into eye
Curved (Concave) MirrorsF P c pa f P = pole , pa = principal axis C = centre of curvature, c = radius of curvature F = Focal point or focus, f = focal length f = c / 2
Ray Diagrams Rule 1: An incident ray parallel to the pa is reflected back through the focal point. F
Ray Diagrams Rule 2: An incident ray that passes through the focal point on the way to the mirror is reflected back parallel to the pa. F
Ray Diagrams Rule 3: An incident ray headed towards the pole reflects back at an equal angle P F
All three combined allow you to find the image In this example the image is inverted, diminished and real object F P image
Concave Mirrors Concave (or converging) mirrors focus light at the focal point. F
Convex Mirrors Convex mirrors have a focal point behind the mirror.Convex (or diverging) mirrors spread the light rays apart so that they appear to have come from the focal point F
Ray Diagrams The same rules can be applied to convex mirrors…All convex mirror images are virtual. object F image
1.Write the names of the seven electromagnetic waves in the order of frequency (low to high) 2.The frequency of an electromagnetic wave is measured to.
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Code for diagrams Types of Lines: Solid Lines = Light Rays Dashed Lines = Virtual Rays Dotted Lines = Guide lines (not a ray) Colors: Blue = Incident Light.
Plane Mirror: a mirror with a flat surface Plane mirrors create virtual images. A virtual image is a point at which light rays appear to diverge without.
Curved Mirrors (Two Kinds) C: Centre of Curvature (2F) V: Vertex PA: Principal Axis F: Focal Point f : focal length (Distance FV)
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RAY DIAGRAMS Steps for drawing a plane mirror ray diagram: 1. A ray that strikes perpendicular to the mirror surface, reflects perpendicular to the mirror.
Curved Mirrors The most common type of curved mirror is a spherical mirror A spherical mirror has the shape of a section from the surface of a sphere.
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