question_answer

Two bars of soft iron exactly same are given. One of them is a magnet. Without using anything more, how would you find which is a magnet

A)  By bringing two bars near and noting which one is attracting. The attracting one is a magnet

B)  By bringing two bars near and noting which one is repelling. One which repels is an ordinary iron.

C)  By rubbing one bar with the other and noting which becomes magnet. The bar which is magnetised is an ordinary iron

D)  One bar is placed flat horizontal on the table and the other bar is held vertical with its one end on the middle of first bar. If there is attraction between the two, the vertical bar is magnet otherwise ordinary iron.