44. If a concave mirror has a focal length of 10 cm, find the two positions where an object can be placed to give in each case, an image twice the height of the object.
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The object should be placed at a distance of 15cm from the concave mirror. The image is virtual and has a magnification 'm' of 2. Thus, the object should be placed at a distance of 5 cm in front of the concave mirror.
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