Fun with Magnet...

A student tries to magnetise a short steel rod, and succeeds in doing so. What does he observe ?

In which of the following cases do magnets lose their property of magnetism ?

A magnet which has lost its magnetic property can be re-magnetised

You should not store a floppy disk near a magnet because ________.

Ravi was standing with a magnetic compass in his hand. A bird flew in the direction opposite to the direction in which the compass needle was pointing. In which direction did the bird fly?

What name is given to the device that makes a strong magnet by passing electricity through a coil of wire wrapped around a block of iron?

Some heated iron filings get cooled when dipped in water. Which of the following statements is true ?

(a) They become non-magnetic due to heating and will not be attracted to a magnet.
(b) They become magnetised and align in a particular direction.
(c) They will still be attracted to a magnet.
(d) Water dissolves away the magnetism of the iron filings, so they are no longer attracted to a magnet.

Raman applied force to separate two natural magnets : A and B, but he couldn't separate the magnets.

Which of the following statements is true according to the situation?

Which of the following statements is true if two identical bar magnets are cut into two identical pieces each, such that the first one is cut transverse to its length and the second one is cut along its length?