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How can you identify? [CLOSED]

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This logic puzzle was published in Martin Gardner's column in the Scientific American. You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

posted Sep 3, 2014 by anonymous

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2 Solutions

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Magnet will always positions itself in S-N way...
this property will be helpful to identify magnet

solution Sep 3, 2014 by anonymous
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Place the rod on the ground with different position. If the rod always points in one particular direction irrespective of its position, than that rod is a magnet. As magnetic rod always points in North-South direction.

solution Sep 3, 2014 by anonymous
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