A thin lens produces an upright image that is twice the height of the object. The object is located 10 cm from the lens on the side from which light approaches.
(a) Determine the distance of the image from the lens, clearly indicating on which side of the lens the image forms. Show your reasoning.
(b) Using your result from part (a), calculate the focal length of the lens, giving the proper algebraic sign and units.
(c) Explain how the sign of the focal length you obtained is consistent with the classification of the lens as converging or diverging.
(a) Determine the image distance, indicating its sign and physical location.
(b) Calculate the focal length with correct sign and units.
(c) Explain how the focal-length sign aligns with the lens type.