An object placed 4 cm in front of a converging lens produces a real image 12 cm from the lens.
(i) What is the magnification of the image?
(ii) What is the focal length of the lens?
(iii) Draw a ray diagram to show the formation of the image.
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Magnification, in optics, the size of an image relative to the size of the object creating it. Linear (sometimes called lateral or transverse) magnification refers to the ratio of image length to object length measured in planes that are perpendicular to the optical axis.
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