One of the following is an example of a permanent magnet.

(a)

Electromagnet

(b)

Mumetal

(c)

Soft iron

(d)

Neodymium

The south pole of a bar magnet and the north pole of a U-shaped magnet will __________.

(a)

attract each other

(b)

repel each other

(c)

neither attract nor repel each other

(d)

None of the above

The shape of the Earth’s magnetic field resembles that of an imaginary __________.

(a)

U-shaped magnet

(b)

straight conductor carrying current

(c)

solenoid coil

(d)

bar magnet

MRI stands for __________.

(a)

Magnetic Resonance Imaging

(b)

Magnetic Running Image

(c)

Magnetic Radio Imaging

(d)

Magnetic Radar Imaging

A compass is used for __________

(a)

plotting magnetic lines

(b)

detection of magnetic field

(c)

navigation

(d)

All of these