Two identical-looking bars A and B are given, one of which is definitelymagnetised . How would oneascertain whether or not both are magnetised? If only one is magnetised, how does one ascertain which one ?

Two identical-looking bars A and B are given, one of which is definite

1.	Two identical-looking bars A and B are given, one of which is definitelymagnetised . How would oneascertain whether or not both are magnetised? If only one is magnetised, how does one ascertain which one ?
Answer» Solution :Different ends of both the bars are brought closer. If both A and B are MAGNETS, repulsion should occur at least once. If one of them is a magnet, Only ATTRACTION OCCURS in all the cases. To FIND out which one is magnetized, keep bar A on a table and move the tip of bar B along the length of A . If it sticks to A in the sameway no matter where we touch the tip, bar B is themagnet. If it sticks less at the centre bar A is the magnet[because magnets are stronger at the poles] .