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4500PP09-3 - Positive Thin Lens Negative Object Distance A...

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Positive Thin Lens - Negative Object Distance A positive (converging) thin lens is in air. It has a focal length of f as depicted in the attached figures. Light is propagating from left to right. An optical system (not shown) forms an image point that becomes the object point for this positive thin lens. In the first case, this virtual object point is located at a distance of f/ 2 to the right of the lens as shown in the upper figure. In the second case, this virtual object point is lo- cated at a distance of 3 f/ 2 to the right of the lens as shown in the lower figure. For the two cases, calculate, showing all work, the location of the final image along the axis of the optical system to the left or to the right of the positive lens. The image due to the optical system (not shown) acts as the object for the positive lens. Calculate, showing all work, the location of the final image point above or below the axis of the optical system. Express your image distances as a function of the focal length f . For the final image distance, indicate whether it is left or right of the positive lens,
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