Q2.Which of the following statements about bar magnets is correct ?
Answer : Option DExplaination / Solution:
As magnetic monopole does not exist. If we split the bar magnet into two pieces each part will have its own north and south pole.
Q3.When iron filings are sprinkled on a sheet of glass placed over a short bar magnet then,
Answer : Option DExplaination / Solution:
North pole act as positive end and South pole act as negative end. The iron fillings in the presence of magnetic field gets magnetized and form a tiny magnet which then gets attracted to the poles of bar magnet. North pole of bar magnet attracts south pole of tiny magnet and vice-versa. So all the iron fillings are arranged as the magnetic field lines of bar magnet.