Class 9 Physics Chapter 8 MCQs Federal Board
Class 9 Physics Chapter 8 MCQs Federal Board
Tick the correct option.
1) If a bar magnet is cut in half it will become:
A) a monopole
B) unmagnetized
C) the same magnet
D) magnet of less strength
Correct option is (c)
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2) Which one is the quickest method to magnetize a material?
A) strike with hammer
B) moving into magnet field
C) stroking the opposite pole
D) putting inside a current carrying coil
Correct option is (d)
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3) Earth’s magnetic field intensity is:
A) constant everywhere
B) very high at equator
C) very low at poles
D) varies place to place
Correct option is (d)
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4) The cause of the Earth’s magnetic field is:
A) rotational motion of Earth
B) spinning of Earth
C) Pull of the sun
D) motion of ions in the core
Correct option is (d)
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5) Material which is the best one for making a permanent magnet:
A) soft iron
B) nickel
C) cobalt
D) steel
Correct option is (d)
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6) Material which is the best one for making an electromagnet:
A) soft iron
B) nickel
C) cobalt
D) steel
Correct option is (a)
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7) A sensitive magnetic material is to shielded by the external magnetic field. It should be kept inside a box of:
A) wood
B) plastic
C) steel
D) soft iron
Correct option is (d)
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8) Magnetic field lines:
A) a farthest at poles
B) intersect each other
C) are closed
D) do not pass in vacuum
Correct option is (c)
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9) When two current carrying wires in the same direction are placed parallel near each other, due to magnetic field produced by each wire they:
A) repel each other
B) attract each other
C) have no effect each other
D) stop moving the current through them
Correct option is (b)
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10) Which of the following material is ferromagnetic?
A) silver
B) copper
C) aluminium
D) nickel
Correct option is (d)
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