The metal which is not used for the making of artifical magnets ?
Steel
Cobalt
Nickel
Aluminium
By induction a magnetic substance attains magnetism temporarily.This statement is :
False
True
Sometimes true and sometimes false
none of these
What happens on heating a magnet ?
Loose its magnetism
Decrease its magnetism
Increase its magnetism
No noticable change
The region around magnet where its magnetic influence is felt is called :
Magnetic lines of force
Magnetic lines
Magnetic field
Magnetic force
Which of the folowing metals are used for making permanent magnet ?
All of these
Choose the incorrect statement:
The south pole of magnet attracts the north pole of another magnet
The north pole of a magnet repels the south pole of another magnet
The north pole of a magnet repels north pole of another magnet
The south pole of a magnet repels the south pole of another magnet
How many poles a magnet has :
4
3
2
1
The attractive power of a magnet is maximum at its :
Poles
Mid point
Sides
Equal every where
Which of the following substance is used for making temporary magnets ?
Copper
Soft iron
Which type of electro magnets are used in electric door bells?
Bar magnet
Horse shoe magnet
Cylindrical magnet
Any of these
