Selina solutions for Concise Physics [English] Class 6 ICSE chapter 6 - Magnetism [Latest edition]

Write true or false of the following statement.

Artificial magnets are weaker than the natural magnets.

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Poles of a magnet cannot be separated.

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A magnet can attract only a magnetic substance.

Write true or false of the following statement.

A magnet has no effect when it is heated to a high temperature.

Write true or false of the following statement.

Permanent magnets get easily demagnetised.

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Magnetic poles occur in pairs.

Write true or false of the following statement.

Single touch method is better than the electrical method for making a magnet.

Write true or false of the following statement.

Magnetic keeper is a wooden piece.

Write true or false of the following statement.

Copper cannot be magnetised.

Fill in the blank.

Temporary magnets are usually made up of .................

Fill in the blank.

Rough handling destroys the .............. properties of a magnet.

Fill in the blank.

Like poles ..................... each other.

Fill in the blank.

A freely suspended magnet points in the ......................... direction.

Fill in the blank.

In a magnet, ............ have the maximum attractive property.

Fill in the blank.

A magnet has ............. poles.

Match the following

Select the correct answer

If we suspend a magnet freely, it will settle in.

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Making a magnetic substance a magnet by bringing it closer to another magnet without touching it, is

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An example of natural magnet is

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The artificial magnet used to detect direction in the laboratory is

What is a magnet?

What are magnetic and non-magnetic substances? Give two examples of each.

What are natural and artificial-magnets?

How is an artificial magnet prepared from a natural magnet?

State two ways of magnetising an iron piece?

How can magnetic properties of a magnet be destroyed?

Why does a freely suspended magnet always rest in a north-south direction?

Draw diagrams of the artificial magnets of four different shapes?

Why are the artificial magnets preferred over the natural magnets?

Describe an experiment to show that the maximum attractive property is at the poles of a magnet?

State four important properties of a bar magnet?

Explain the attractive property of a magnet with the help of an experiment.

Describe the method by which an iron bar can be made a magnet.

How are the magnets kept safely? What is the role of keepers in storing the magnets?

Define the term magnetic field of a magnet. How will you recognize it experimentally?

How will you make an iron bar electromagnet? Draw a diagram showing the polarities of the electromagnet?

State two ways of increasing the strength of an electromagnet

Suppose you are given a long bar magnet and you are asked to break it into four small magnets. Draw diagrams showing the polarities of each broken part.

State three important uses of a magnet.

What is the magnetic induction? Explain with the help of a diagram.

In which direction does a suspended bar magnet come to rest? Give reason.

State three differences between the temporary and permanent magnets.

State three ways of demagnetising a magnet.

Suggest one way to recognize the magnetic field of the earth.

Name the material of the core of an electromagnet for temporary magnet.

Name the material of the core of an electromagnet for permanent magnet.

You are given an iron nail, a torch cell, and a long piece of insulated copper wire. With the help of a labelled neat diagram, describe in steps how you will make the nail, an electromagnet.

Describe an experiment to illustrate that like poles repel while the, unlike poles, attract.

What are magnetic keepers? Name its material.

How are the north and south poles of a magnet located? Explain.

Answer the following.

What are magnetic substances?

Answer the following.

What are artificial magnets?

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Why is it not possible to isolate a single magnetic pole?

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Can you bring two similar poles of two different magnetic close together easily? Why?

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What is meant by the directional property of magnets?

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Temporary magnets are made of

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The surest test of magnetism is

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Which of the following methods is used to magnetize a magnetic without touching it by a magnet?

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The region around a magnet where its magnetic force can be experienced is called

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A permanent magnet can be demagnetized by

Fill in the blank.

A freely suspended magnet always comes to rest in the ................. direction.

Fill in the blank.

Permanent magnets are generally made of steel, cobalt, nickel, or an alloy called ...............

Fill in the blank.

The perpendicular bisector of the line joining the two poles of a magnet is called ...................

Fill in the blank.

The north pole of the imaginary magnet of the earth is near the geographic ................. pole.

Fill in the blank.

Magnetic poles always exist in ...............

State if the following statement is true or false. Correct the statement if it is false.

If a bar magnet is cut in two pieces, then one piece will have only the north pole and the other will have only the south pole.

State if the following statement is true or false. Correct the statement if it is false.

Attraction is the surest test for magnetism.

State if the following statement is true or false. Correct the statement if it is false.

Temporary magnets are made of cobalt.

State if the following statement is true or false. Correct the statement if it is false.

As we move away from a magnet, its attraction power weakens.

State if the following statement is true or false. Correct the statement if it is false.

Whenever a magnet is not in use, it should be stored along with other magnets.

Give a reason for the following.

Magnets must be bandied with care?

Give a reason for the following.

Iron is a magnetic substance.

Give a reason for the following.

The directive property of magnets is used in a compass.

Give a reason for the following.

Electromagnets are temporary magnets.

Give a reason for the following.

Magnets are used to close the doors of a refrigerator tightly.

Answer the following in short.

Give two examples each of magnetic and. non-magnetic substances.

Answer the following in short.

What is a magnet? Differentiate between natural and artificial magnets.

Answer the following in short.

If a bar magnet is placed over iron filings, where will the attraction of the iron fillings be

1. maximum?
2. minimum?

Define the following term regarding a bar magnet:

Magnetic axis

Define the following term regarding a bar magnet:

Effective length

Define the following term regarding a bar magnet:

Magnetic equator

Define the following term regarding a bar magnet:

Magnetic field

Answer the following in short.

Name a few common appliances that use electromagnets.

Answer the following in detail.

Distinguish between a temporary magnet and a permanent magnet.

Answer the following in detail.

Write a short note on the theory of magnetism.

Answer the following in detail.

List four methods of magnetizing a magnetic substance.

Answer the following in detail.

How is the single-touch method of magnetism different from the double-touch method?

Answer the following in detail.

How can a magnet be demagnetized?