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A) In the geometrical optics experiment, a student used a convex lens with 7 cm focal...

A) In the geometrical optics experiment, a student used a convex lens with 7 cm focal length to produce a large image of an object. The object was placed at a distance of 13 cm from the lens. Find the location of the formed image with respect to the lens (in cm).

B) In the geometrical optics experiment, a student performed an experiment to measure the focal length of a convex lens. The object was placed at a distance of 14.8 cm from the lens, and a real image was formed on the screen at a distance of 7.5 cm from lens. Calculate the focal length of the lens (in cm).

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