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32_Ch 23 College Physics ProblemCH23 Mirrors and Lenses

32_Ch 23 College Physics ProblemCH23 Mirrors and Lenses -...

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298 CHAPTER 23 (a) If f =− , then 2 20.0 cm 2 20.0 cm q =+ and the magnification by the second lens is ( ) ( ) 2 2 2 20.0 c 2.00 M q p = − = − = + m 10.0 cm The final image is located 20.0 cm to the right of the second lens ( ) and the overall magnification is ( ) 1 2 M M M = = 3.00 2.00 6.00 + = − (b) Since 0 M < , the final image is inverted (c) If f =+ , then 2 20.0 cm 2 6.67 cm q =+ and ( ) 2 2 0.667 q p = + 2 M = 6.67 cm -10.0 cm = − The final image is 6.67 cm to the right of the second lens ( ) and the overall magnification is ( ) 1 2 3.00 0.667 2.00 M M M = = − + = − Since 0 M < , the final image is inverted 23.58 The object is located at the focal point of the upper
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