a concave mirror of focal length 20 CM produces an image twice the height of the object. If he image is real find the distance of the object from the mirror
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let hight of image = 2 height of object.
using mirror formula 1/f=1/u+1/v (1/v=1/2u)we get -30 distance of object
using mirror formula 1/f=1/u+1/v (1/v=1/2u)we get -30 distance of object
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