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How to locate the image in a diverging (convex) mirror
SNC 2D1April 18 2011Mr. Dvorsky
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• Recall if the mirror bulges out towards you like the back of a spoon, it is convex or divergent.
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• In convex mirrors we still have points F and C.• However, F is now called virtual F, and along
with point C they are now located behind the mirror
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FCF’ C’
Ray #1: Any ray that is parallel to the PA is reflected as if it has passed through virtual FRay #2: Any ray that appears to have passed through virtual F is reflected parallel to PARay #3: Any ray that appears to have passed through C is reflected along the same pathRay #4: Any ray that hits the vertex appears to have been reflected at the same angle
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The light rays reflected off a convex mirror always diverge. Therefore these mirrors are also called diverging mirrors.
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The reflected raysnever cross in front of the mirror to form a real image.
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• The brain extrapolates these rays behind the mirror to where they appear to converge. This results in an image that is smaller, upright, and virtual.
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• CHAPTER REVIEW• Page 506-507• Please begin to
prepare for your chapter 11 test
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-Convex mirrors are often used as security mirrors in stores.
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-also with their smaller upright virtual image they show a wider range that makes them useful as side-view mirrors in cars.