Fun with Magnet...

Vikram dips a bar magnet into a container of iron filings. Which areas of the bar magnet attract the most amount of iron filings?

If a magnet is cut into four pieces length-wise, then the number of poles obtained will be

The needle of a compass is made of a magnet because it _____.

(i) attracts metal
(ii) gets deflected when a magnet is brought nearby
(iii) comes to rest in East-West direction
(iv) comes to rest in North-South direction

In the given diagrams, compasses are used to plot the magnetic field around a bar magnet with poles marked N (North) and S (South). Which of the following diagrams correctly shows the expected field pattern?

Which of the following statements is/are true?

(a) A magnetic compass has a translucent cover on circular dial.
(b) A compass needle is a magnetised needle.
(c) A compass needle has the same type of poles on both sides.

The figure below shows a ring magnet X, floating above another ring magnet Y. This is because ___________________.

What would happen when a magnet is held near a cork, as shown in the diagram?

What will happen when three bar magnets are hung in the manner shown below?

If magnetised iron filings are mixed with soil and a bar of thermocol is placed over it, then what type of force will act between the
thermocol bar and iron filings mixed with the soil?

(a) Strong force of repulsion
(b) No force of attraction
(c) No force of repulsion
(d) Strong force of attraction

Which of the following materials is best suited for making magnetic keepers?

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?

A bar magnet is broken into two pieces. Which of the following statements is true about the force between the broken pieces if they face each other with a small separation?