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20 questions
there are how many poles in a magnet
1
5
3
2
Magnet looses it magnetic power on
Heating
Hammering
Dropping from height
All of these
When two same poles are brought together
They attract each other
They repel each other
They become cold
They align in N-S direction
. What would we call a nail that can pick up a paperclip because it is touching a magnet?
Temporary magnet
Poles
Force
Detector
Which two metals will be attracted by a magnet?
Iron and cobalt
Gold and Silver
Aluminium and Lead
Copper and Cobalt
Where on a magnet is the force the strongest
Poles
Middle
Repel
Observe the pictures A and B given in pictures carefully Which of the following statement is correct for the above given pictures?
(a) In A, cars 1 and 2 will come closer and in B, cars 3 and 4 will come closer.
(b) In A, cars 1 and 2 will move away from each other and in B, cars 3 and 4 will move away.
(c) In A, cars 1 and 2 will move away and in B, 3 and 4 will come closer to each other.
(d) In A, cars 1 and 2 will come closer to each other and in B, 3 and 4 will move away from each other.
Three magnets A, B and C were dipped one by one in a heap of iron filing. Fig. 13.3 shows the amount of the iron filing sticking to them. The strength of these magnets will be
A>B>C
A<B<C
A=B=C
A<B>C
What is a natural magnet known as?
A) Toroid
B) Lodestone
C) Haematite
D) Solenoid
In which direction does a magnet always point when suspended freely?
A) South-West
B) North-South
C) East-West
D) West-South
Where does a compass work?
A) Only in oceans or seas
B) Only on land, where the earth's magnetic field is strong
C) Only on high mountains
D) At all the places within the earth's magnetic field
What is the special property of magnetic substances?
A) They are repelled by magnets.
B) They are attracted by magnets.
C) They are both attracted and repelled by magnets.
D) They cannot be made into magnets.
Which of the following will NOT be attracted by a magnet?
A) Iron
B) Nickel
C) Gold
D) Cobalt
Two magnets are placed close to each other as shown below. Which set will attract each other?
The _______ pole of a freely suspended magnet points towards the geographical north pole.
North
South
Left
Right
If you break a magnet into 8 pieces, how many north and how many south poles would be there in all?
N = 4, S = 4
N = 2, N = 2
N = 8. S = 8
N = 6, S = 12
How many keepers does a horseshoe magnet need for its storage?
1
2
5
8
The magnetic south pole of the earth is near the -
Geographical north pole
Geographical south pole
Neither (a) nor (b)
Sometimes (a) sometimes (b)
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