the magnification of the image becomes 2. The focal length of the mirror is

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An object placed in front of a concave mirror at a distance of x cm from the pole gives a 3 times magnified real image. If it is moved to a distance of (x+5)cm, the magnification of the image becomes 2. The focal length of the mirror is
09
Nov
An object placed in front of a concave mirror at a distance of x cm from the pole gives a 3 times magnified real image. If it is moved to a distance of (x+5)cm, the magnification of the image becomes 2. The focal length of the mirror is An object placed in front of a [...]
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Tags: An object placed in front of a concave mirror at a distance of x cm from the pole gives a 3 times magnified real image. If it is moved to a distance of (x+5)cm , the magnification of the image becomes 2. The focal length of the mirror is ,