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1.
Which of the following materials is magnetic?
Platinum
Brass
Cobalt
Aluminium
2.
A body is more stable when its centre of gravity is
at the centre.
at its top.
outside the body.
close to the ground.
3.
Which of the following materials is magnetic?
Platinum
Brass
Cobalt
Aluminium
4.
Which of the following materials is non-magnetic?
Brass
Steel
Nickel
Cobalt
5.
Which of the following statements about magnetic fields are correct? A magnetic field
I. has magnetic lines of force.
II. is a force field.
III. has direction.
II and III only
I and III only
I and II only
I, II and III
6.
Which of the following elements is a ferromagnetic metal?
Silver
Nickel
Mercury
Copper