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Question
Nikhilesh has a strange piece which can attract many objects including some non-magnetic substances. What are the things would he need to find whether it is a magnet or not?
Nikhilesh has a strange piece which can attract many objects including some non-magnetic substances. What are the things would he need to find whether it is a magnet or not?
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Solution
The correct option is D He does not require anything more
A magnet, when suspended freely, aligns itself according to the Earth's magnetic field. So, Nikhil can just suspend the magnet with the help of the thread. If the piece is a magnet, it comes to rest in the north-south direction when suspended freely. This is because the south pole of the magnet is attracted by the Earth's magnetic north pole(geographical south) and the north pole of the magnet is attracted by the Earth's magnetic south pole(geographical north). So, he does not need anything more than a piece of thread.
He does not require anything more
A magnet, when suspended freely, aligns itself according to the Earth's magnetic field. So, Nikhil can just suspend the magnet with the help of the thread. If the piece is a magnet, it comes to rest in the north-south direction when suspended freely. This is because the south pole of the magnet is attracted by the Earth's magnetic north pole(geographical south) and the north pole of the magnet is attracted by the Earth's magnetic south pole(geographical north). So, he does not need anything more than a piece of thread.
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