Q. 4 A5.0( 1 Vote )

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Answer :

Magnetic needle is used in a mariner's compass as Sailors use marine compass to locate directions.


Whenever a magnet is kept in such a situation, that it is fee to move in any direction on the surface of earth, it aligns or orient itself such that north pole of magnet points towards North Pole of earth and south pole towards south pole of earth, Magnetic needle in marine compass rotates to come to rest at north- south direction


This helps sailors to point north direction, with the help of which all other direction can be determined by mariner, and mariner can travel.


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