an object is placed at a distance of 2f in front of a concave mirror the magnification
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Answer: -1 , image will be of the same size but inverted
Explanation: u = -2f
when an object is placed at 2f or C the image is formed at 2f or C
therefore , v = - 2f
magnification(m) = -v/u
=> m = -(-2f)/-2f
=> m = -1
therefore magnification = -1
negative sign means that image is inverted
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