. To find the north pole of a bar magnet
(a) bring an iron nail towards it.
(b) suspend it freely with the help of a silk thread.
(c) bring a brass bar towards it.
(d) bring a cobalt bar towards it.
Best Answer
(b)
Explanation: When a magnet is suspended freely, its one end points in the direction of geographical north which is called the 'North Pole'. The other end points in geographical south direction and is called 'South Pole'.
Explanation: When a magnet is suspended freely, its one end points in the direction of geographical north which is called the 'North Pole'. The other end points in geographical south direction and is called 'South Pole'.
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