Magnets

The magnetic domains of a ferromagnetic material when placed in an external magnetic field will 

Magnetic length is always less than the geometric length.

A freely suspended magnetic needle/magnet always rests in geographic north-south direction.

How can we identify the north and south pole of a bar magnet? 

The magnetic length of a bar magnet is

The geometric length of a bar magnet is

Hitting a magnet with a hammer does not lead to demagnetisation.

When a magnet is strongly heated, its magnetic properties may lose. Do you agree with the statement? Justify your answer.

State the different methods to demagnetise a magnet.

Define diamagnetic substances.

Choose an example of a paramagnetic substance from the following options.

Define paramagnetic substances.

Define ferromagnetic substances.

Name the materials that are attracted by a magnet. (Choose from magnetic materials or non-magnetic materials).

Which is not a magnetic material?

A bar magnet is broken into three parts X, Y and Z as shown below.

Which diagram show the poles in X, Y and Z.

Substances which are not attracted by a magnet are called _____ substances.

_____ (Horse shoe/ Bar) magnet is used in the electric bell.

What will happen when an iron clip is brought near the magnet? Why?

Read the given statement. Find out the appropriate answer for it and then search the word from the given box and fill in the blank.

The materials attracted by magnet are iron, nickel, steel and _____.