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Physical Chemistry Exam Review 195

Physical Chemistry Exam Review 195 - This point is called...

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Physical Science Activities Manual ________________________________________________________________________________________________________________ ________________________________________________________________________________________________________________ Center of Excellence for Science and Mathematics Education at The University of Martin G. Concave Mirrors 1. A mirror reflects light to form an image instead of refracting it as in the case of lenses. All images created by looking into a plane mirror are VIRTUAL . This means that you can not project them on to a screen. They appear as though they are coming from behind the mirror. 2. Concave mirrors, such as the inside of the bowl of a spoon, form both virtual images and REAL images. Real images can be projected onto a screen. 3. As parallel rays of light hit the surface of a concave mirror they are reflected through the same point in front of the mirror.
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Unformatted text preview: This point is called the focal point. 4. As in the case of the convex lens, the distance from the focal point to the center of the mirror is called the focal length of the mirror. Measure the focal length, f, for the mirror used in part D of the EXPLORATION section of this lesson. 5. Instead of the light coming into the mirror in parallel rays form a source such as the sun, put a point source of light right at the focal point of the mirror. What will happen? [This is the principal of how a automobile headlight works. The tiny bulb is put at the focal point and the rays are directed off the reflector parallel to each other resulting in a parallel beam of light instead of light scattered in all directions. Position of Nature of Image Object Real or Virtual? Magnified? Inverted or Erect? Beyond f REAL YES & NO INVERTED At f NO IMAGE--------------Within f VIRTUAL YES ERECT...
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