An object is placed 20 cm in front of a plane mirror.The mirror is moved 2 cm towards the object.The distance between the positions of the original and final images seen in the mirror (DIAGRAM) ONLY
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if the mirror is moved 2 cm towards the object, then the distance between mirror and object = 20 cm – 2 cm = 18 cm. ... Since the mirror has also moved 2 cm away from the position of original image, so the total distance between the positions of the original and final images is 2 cm + 2 cm = 4 cm.
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