1. Give reason
Magnets were used by sailors to find direction in olden time
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Explanation:
बिकॉज़ मैग्नेट एक्सप्रेस नॉर्थ नॉर्थ एंड साउथ साउथ एंड नॉर्थ साउथ फिल्म नॉट अट्रैक्ट ईच अदर सुदेश रीजन बी ओल्ड टाइम मैग्नेट फाइंड डायरेक्शन
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Answer:
In olden days, sailors used to find direction by suspending a piece of bar-magnet. A cylindrical magnet has only one pole. (ii) Artificial magnets were discovered in Greece. Similar poles of a magnet repel each other.
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