Poles of a Magnet

Q.

What are magnetic and non-magnetic materials?

Q. Like poles of magnets _________ each other and unlike poles of magnets ______ each other.

1. attract, attract
2. repel, attract
3. repel, repel
4. attract, repel

Q.

Question 16

Fig. shows a magnetic compass. What will happen to the position of its needle if you bring a bar magnet near it? Draw a diagram to show the effect of the needle on bringing the bar magnet near it. Also, draw the diagram to show the effect when the other end of the bar magnet is brought near it.

Q.

An example of a natural magnet is

Q.

Magnets can repel magnetic materials.

1. False

2. True

Q.

Why are magnetic field lines closed curves?

Q. The needle of a compass is made up of a magnet. Which of the following statements can prove it?

1. The needle attracts objects made of magnetic materials.
2. The needle gets deflected when it is brought near a magnet.
3. The needle comes to rest in the East-West direction.
4. The needle comes to rest in the North-South direction.

Q.

A magnet always has __________ poles.

Q. When the North pole of a bar magnet is brought near the North pole of a freely suspended magnetic needle, what is the behaviour exhibited?

1. The magnetic needle gets attracted to the magnet brought near it
2. The magnetic needle deflects away from the magnet
3. The magnetic needle does not respond to the magnet
4. The needle keeps on spinning

Q.

Question 10

A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. Affect observed in each case is stated in Column I. Possible reasons for the observed affects are mentioned in Column II. Match the statements given in Column I with those in Column II.

Q.

Question 3

Three magnets A, B and C were dipped one by one in a heap of iron filing. Fig. shows the amount of the iron filing sticking to them.

The strength of these magnets will be

(a) A > B > C

(b) A < B < C

(c) A = B = C

(d) A < B > C

Q. Which of the following statement/s is/are true for gravitational and magnetic forces?

1. Magnetic force is stronger than gravitational force.
2. Attraction occurs in both the forces.
3. Repulsion occurs in both the forces.
4. Both the forces act between magnets.

Q.

We can separate North and South pole from the same magnet.

1. False

2. True

Q. Name the device which is used by sailors to find direction.

1. Needle
2. Odometer
3. Magnetic compass
4. Speedometer

Q. Satish magnetised a piece of iron marked W, X, Y and Z using the stroking method as shown in the figure.

Which of these parts of the iron piece will become the north-seeking pole?

1. W
2. X
3. Y
4. Z

Q.

We can isolate north and south pole separately from a given magnet.

1. None of these

2. Both A and B

Q.

Poles of a bar magnet is located _________.

1. at the middle of the magnet

2. outside the bar magnet

3. at one of the end, together

4. at two extreme ends of the magnet

Q.

In a bar magnet, strength of the north pole is _______ the strength of the south pole.

1. equal to

2. less than

3. twice

4. greater than

Q. Which of the following statements is true?

1. The north pole of a magnet will attract the north pole of another magnet.
2. Isolated magnetic poles do not exist.
3. Artificial magnets can be made from non-magnetic materials as well.
4. Lodestone is an artificial magnet.

Q. Magnetic strength of a magnet is equally distributed over its body.

1. True
2. False

Q.

A bar magnet has ___poles.

Q. The magnetic strength of the north pole of a magnet is _________ the south pole.

1. twice of
2. half of
3. equal to
4. one third of

Q.

Which of the following statements is correct?

1. Natural magnets were made in the laboratory.

2. Unlike poles of magnets repel each other.

3. Like poles of magnets repel each other.

4. A cylindrical magnet has only one pole.

Q. What is declination? Draw a diagram to show the angle between the declination and true direction of geographic north.

Q.

A naturally occurring material that has magnetic properties is_________.

Q.

An isolated magnetic pole can not be obtained.

1. True
2. False

Q.

Copper cannot be magnetized.

1. True
2. False

Q.

What are the two basic properties associated with a magnet?

Q. A horseshoe magnet haspoles.

1. $1$
2. $2$
3. $3$
4. $4$

Q. Which of the following are true for magnetic and geographic poles of Earth?

1. Magnetic North and geographic North are on same hemisphere and overlap each other.
2. Magnetic South and geographic South are on different hemisphere and overlap each other.
3. Magnetic North and geographic North are on same hemisphere and are shifted away from each other.
4. Magnetic South and geographic South are on same hemisphere and are shifted away from each other.