A. Manalaysay – PHY2054, Fall 2004CHAPTER 23Real image -- when light actually passes through the image; it is invertedImaginary image-- the opposite of a real image; it is uprightThe image is not always the same size as the object which created it. The magnificationis defined as:--- Definition of magnificationSpherical Mirrors:p is the distance from the objectto the mirrorq is the distance from the imageto the mirrorf is the focal length = half the radius of curvature. See figure 23.10 on page 719: if you shine parallel beams of light onto a spherical mirror, they intersect at the focal point.Sign Conventions for Spherical MirrorsQuantityPositive When…Negative When…Object location (p)Object in front of mirrorObject in back of mirrorImage location (q)Image in front of mirrorImage in back of mirrorImage height (h’ )Image is uprightImage is invertedf and RMirror is concaveMirror is convexThin Lenses:p and q are the same as above (not their signs though)R1
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