Sailors can find the directions by freely suspending a piece of ______.

None of these

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Bar magnet

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Magnetic compass

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Electromagnet

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Solution

The correct option is B
Bar magnet

Lodestone is a natural magnet and hence aligns in north-south direction when freely suspended. In the old days, sailors used to find directions by freely suspending a piece of a lodestone. It works similar to a magnetic compass pointing towards north and south direction.

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(i) Artificial magnets are made in different shapes such as ___________, ____________, and ___________.

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(iii) Paper is not a ___________material.

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(v) A magnet always has ___________ poles.

In ancient times, sailors used to find direction by suspending a piece of______.

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