Question

Read the following and answer any four questions from 7 (i) to 7 (v)

A student fixes a sheet of white paper on a drawing board .He

places a bar Magnet in the centre of it. He sprinkles some iron

filings uniformly around the bar magnet. Then he taps the board

gently the board gently and observes that the iron fillings arrange

themselves in a particular pattern

1x4

i)A plotting compass is placed near the south pole of a bar

magnet. The pointer of the plotting compass will:

I look forward a) Point away from the south pole

b) Point parallel to the south pole

c) Point towards the south pole

d) Point at right angles to the south pole
O
ii) The north pole of Earth’s magnet is in the:

a) Geographical South

b) Geographical East

c)Geographical West

d) Geographical North
iii) Which of the following materials is the most suitable for making

a permanent magnet?

a)Soft Iron

b)Nickel

c)Copper

d)Steel

iv) Which of the following statements is true about magnetic

lines of force?

a)Magnetic lines of force are always closed.

b)Magnetic lines of force always intersect each other.

c)Magnetic lines of force tend to crowd far away from the poles

of the magnet

d)None of these

v) Magnetic lines of force of a bar magnet do not intersect

because

a)The lines have similar charges hence they repel each other

b)The lines always diverge from a single point

c)A point always has a single net magnetic field

d)The lines need magnetic lenses to intersect
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Answer 1

Answer:

d) The lines need magnetic lenses to interstate