Solved: (a) An object 37.5 cm in front of a certain lens

Chapter 23, Problem 82GP

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Problem 82GP

(a) An object 37.5 cm in front of a certain lens is imaged 8.20 cm in front of that lens (on the same side as the object). What type of lens is this, and what is its focal length? Is the image real or virtual? (b) If the image were located, instead, 44.5 cm in front of the lens, what type of lens would it be and what focal length would it have?

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