Calculate the distance at which an object should be placed in front of a convex lens of focal length 10 cm to obtain an error image of double its size
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Answer:Where should an object be placed from a converging lens of focal length 20cm so as to obtain a real image of magnification 2? Result: object should be placed at a distance of 30cm from the lens. A small object is placed 6cm away from a converging lens of focal length 10cm.
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