Physics 014 Images. Topics Plane mirrors Spherical mirrors Thin lenses.
Mirrors ppt
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Transcript of Mirrors ppt
Mirrors By: Bailey Griggs and Katie Kennedy
• Mirrorso Distinguish between Concave and
Convex mirrors.o Describe a simple ray diagram.o Distinguish between real and virtual
images.
Objectives
• Types of Mirrorso Convexo Concaveo Sphericalo Parabolic
• Convex Mirrorso How light reflectso Examples
Mirrors Outline
• Concaveo How light reflectso Examples
• Simple Ray Diagramo Explanation and Examples
• Real vs. Virtual Imageso Real Images o Virtual Images
• Demonstrations• Evaluation Questions
Mirrors
We are going to explore how
concave and convex mirrors work along with describing the simple ray diagrams that go along with each one. We will also discuss the real and/or virtual images that both of these mirrors produce.
Convex
Concave
Spherical
Parabolic
Different Types of Mirrors
Straight or Plane mirror
Concave
• Reflection
• Curved inward reflective surface
• Used to magnify
• Produces Real and Virtual Imageso depend on object’s distance from the
surface of the mirror and the focal length.
Concave
Convex
• Reflection
• Image is small or reduced in size
• Image is upright
• Image is located behind the convex mirror
• Image is always virtual
Convex
Convex- smaller image
Concave- magnified image
Simple Ray Diagram
• Tool used to determineo locationo sizeo orientationo type of image formed
• Real or Virtual
• Straight/ Plane mirror
• Extended Reflected Rays make up image
• Behind the mirror
Simple Ray Diagram for Concave Mirrors
Whether the image is upside-down or rightside up depends of the distance you are from the mirror
and the focal length of each mirror.
Simple Ray Diagram for Convex Mirrors
• Virtual imageo Object is less than the focal length of the mirroro Can only be seen by looking at the mirror, not
projected• Real Image
o object is further than focal length of mirroro Can be projected and everyone in the room can look
at it
Real vs. Virtual Images
Demonstration Time!
Evaluation Questions
Which mirror produces an image behind the mirror, Concave or
Convex?
Convex
Evaluation Question #1
True or False: Concave mirrors are used to magnify images.
True
Evaluation Question #2
A _____________ mirror takes a large space and makes it small.
Convex
Evaluation Question #3
An image that is produced that is less than the focal length of the mirror is
a ______________ image.
Virtual
Evaluation Question #4
A ______________ image can be projected.
Real
Evaluation Question #5
Label the diagram with Concave or Convex with the correct image.
Evaluation Question #6
Concave Mirror Convex Mirror
The point at which the extensions of the reflected rays intersect is the
_________ of the image being produced.
a. Bottomb. Topc. Center
Evaluation Question #7
Concave mirrors produce:
a. Real Imagesb. Virtual Imagesc. Both
Evaluation Question #8
Flinn, G. (n.d.). HowStuffWorks "Types of Mirrors". HowStuffWorks "Science". Retrieved October 21, 2013, from http://science.howstuffworks.com/innovation/everyday-innovations/mirror3.htm
Flinn, G. (n.d.). HowStuffWorks "Types of Mirrors". HowStuffWorks "Science". Retrieved October 21, 2013, from http://science.howstuffworks.com/innovation/everyday-innovations/mirror3.htm
Henderson, T. (n.d.). Reflection and Image Formation for Convex Mirrors. The Physics Classroom. Retrieved October 21, 2013, from http://www.physicsclassroom.com/class/refln/u13l4a.cfm
Hewitt, P. G. (2002). Conceptual physics: the high school physics program. Needham, Mass.: Prentice Hall.
Moore, C. (n.d.). Concave and Convex Mirrors. More House. Retrieved October 18, 2013, from https://www.morehouse.edu/facstaff/cmoor
Bibliography