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Fun with Magnets

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19 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

The earth behaves like a huge bar magnet with its magnetic north pole near the geometrical __________ pole.

  1. south
  2. north
  3. east
  4. northeast
  5. none of these
Question 2 Multiple Choice (Single Answer)

When a magnet is suspended freely, it always aligns itself in ________ direction.

  1. north
  2. north-south
  3. north-west
  4. north-east
  5. south
Question 3 Multiple Choice (Single Answer)

In which direction does the north end of a freely suspended magnet point?

  1. Geographical north
  2. Geographical south
  3. Geographical east
  4. It does not have any fixed direction
  5. None of these
Question 4 Multiple Choice (Single Answer)

Which of the following is the sure test of magnetism?

  1. Attraction between the opposite poles.
  2. Repulsion between the same poles.
  3. When suspended freely, a magnet always aligns in N-S direction.
  4. Two poles of a magnet are indivisible.
  5. There is no sure test of magnetism.
Question 5 Multiple Choice (Single Answer)

_______________ is the device used by pilots and navigators to find a direction.

  1. Weather vane
  2. Chronometer
  3. Sextant
  4. Magnetic compass
  5. None of these
Question 6 Multiple Choice (Single Answer)

By which of the following ways does a magnet get demagnetised?

  1. By heating the magnet
  2. By throwing it from a height
  3. By hammering it violently
  4. All of the above
  5. A magnet never gets demagnetised
Question 7 Multiple Choice (Single Answer)

Which of the following is not the property of a magnet?

  1. A magnet attracts magnetic material.
  2. When a magnet is suspended freely, it points in N-S direction.
  3. Same poles of a magnet attract and opposite poles repel.
  4. Magnetic influence can pass through the screen of cloth, plastic and paper.
  5. The force of magnetic attraction is the maximum at poles.
Question 8 Multiple Choice (Single Answer)

______________ is the only natural magnet.

  1. Magnetite
  2. Ebonite
  3. Cobalt
  4. Nickle
  5. There is no natural manget. Magnets are always artificially prepared.
Question 9 Multiple Choice (Single Answer)

Which of the following types of magnet(s) is/are used in cranes to lift heavy containers from ships?

  1. Cylindrical magnet
  2. Electromagnet
  3. Horseshoe magnet
  4. Bar magnet
  5. Both 1 and 2
Question 10 Multiple Choice (Single Answer)

Unlike poles of a magnet ___________ each other.

  1. attract
  2. repel
  3. first attract and then repel
  4. heat up
  5. none of these
Question 11 Multiple Choice (Single Answer)

What name is given to the rock used to help find the directions?

  1. Magic rock
  2. Way finder
  3. Lodestone
  4. Pole rock
  5. Compass
Question 12 Multiple Choice (Single Answer)

The best way to magnetise a steel pin is by _________________.

  1. heating it
  2. putting it in water
  3. hitting it with a magnet
  4. stroking it with a magnet
  5. none of these
Question 13 Multiple Choice (Single Answer)

What will happen, if we break a magnet from the middle?

  1. A magnet will lose its magnetic power.
  2. Both the pieces will become new magnet with N-S pole.
  3. North and south poles will be separated.
  4. Nothing will happen.
  5. None of the above
Question 14 Multiple Choice (Single Answer)

Which of the following statements is/are true?

  1. Poles are not exactly at ends but are slightly inside.
  2. A magnet has three poles, two poles at the ends and one at the center.
  3. A magnet poles can be isolated.
  4. Opposite poles of a magnet attract each other.
  5. All the above are true.
Question 15 Multiple Choice (Single Answer)

Magnetism is a kind of ______________.

  1. electricity
  2. gravity
  3. matter
  4. force
  5. energy
Question 16 Multiple Choice (Single Answer)

A horse shoe magnet is powerful, what would happen if its shape is changed to a bar magnet?

  1. It will become powerful.
  2. It will lose its magnetic power due to striking.
  3. The location of poles will be interchanged.
  4. It will convert into simple piece of iron.
  5. None of these
Question 17 Multiple Choice (Single Answer)

Which of the following is a magnetic material?

  1. Brass
  2. Copper
  3. Nickle
  4. Silver
  5. All of the above
Question 18 Multiple Choice (Single Answer)

Strength of a magnet is _____________.

  1. the maximum at the poles
  2. the minimum at the poles
  3. the maximum at the center
  4. the minimum at the center
  5. equal everywhere
Question 19 Multiple Choice (Single Answer)

What name is given to the device that makes a strong magnet by passing electricity through a coil of wire wrapped around a block of iron?

  1. Electric kettle
  2. Crane
  3. Solenoid
  4. Transformer
  5. None of the above
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