a concave mirror of focal length 10 cm is placed at a distance of 25 cm from a wall how far from the wall can an object be placed so that the image formed by the mirror falls on the wall
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Here, f =-10cm; v =-35 cm (since the image is formed on the wall and distance between the wall and mirror is 35cm). Image is beyond 2f so object has to be in between F and C. Let the distance of the object from the wall be x. Therefore, the distance of the object from the wall = 21 cm
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