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13-11-2017
Physics

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Find the image position for a picture placed 3.0 cm outside the focal point of a converging lens with a 4.0 cm focal length. a. 6.2 cm c. 2.8 cm b. 9.3 cm d. 11.0 cm

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23-11-2017

Answer: Using 1/f = 1/d' + 1/d ...(where d' object distance and d is image distance) 1/4 = 1/7 + 1/d 1/4 - 1/7 = 1/d 3/28 = 1/d d = 28/3 d = 9.33 cm

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