Suspension of Magnets

Q.

Which of the following is a property of a typical magnet?

1. Temporary magnets can be made from a piece of Iron

2. Attract magnetic materials - such as iron, nickel, cobalt

3. Exert an attractive or repulsive force on other magnets

4. All of the above

Q.

Which of the following is/are true about the needle in magnetic compass?

1. It always aligns itself in North-South direction in Earth's magnetic field

2. It always aligns itself in North-East direction in Earth's magnetic field

3. It is a non-magnetic substance

4. It attracts metal

Q.

Write Any Two Properties of a Magnet

Q.

The surest test for magnetism is ___________.

1. reflection

2. Attraction

3. Repulsion

4. Heating

Q.

At which of the following locations is a compass functional?

1. On places that are deep, such as ocean floors

2. On sea level places, such as the beach

3. On certain high altitude places, such as mountain peaks

4. At all the places within the earth's magnetic field

Q.

A compass has a small balanced pointer that always points North-South when suspended freely. This is because :

1. The Earth doesn't have any magnetic field.

2. The compass needle points to cold places.

3. The Earth has a magnetic field and the pointer is magnetic.

4. Of gravitational force of the Earth.

Q. You are provided with two identical metal bars. One out of the two is a magnet. Suggest two ways to identify the magnet.

Q.

The surest test for a magnetism is

1. repulsion

2. attraction

3. both attraction and repulsion

4. none of these

Q.

A magnet in the form of a cube is placed on a piece of cork that floats on water. The cube is marked with four faces W, X, Y and Z and the compass needle points in the direction as shown in the figure. The arrow beside the N symbol represents the direction of the geographical north pole.

Which of the following faces denote the N - pole and S - pole of the magnet?

1. N - pole (W)
   S - pole (X)

2. N - pole (X)
   S - pole (Y)

3. N - pole (Y)
   S - pole (Z)

4. N - pole (Z)
   S - pole (W)

Q.

A magnetic compass is functional ____________.

1. only in high mountains

2. only in oceans or seas

3. at all the places within the earth's magnetic field

4. only on land, where the earth's magnetic field is strong

Q. A freely suspended magnet on Earth aligns itself in the _________ direction.

1. North-South
2. East-South
3. North-West
4. East-West

Q.

Nikhilesh has a strange piece which can attract many objects including some non-magnetic substances. What are the things would he need to find whether it is a magnet or not?

1. A piece of non-magnetic substance

2. A thread to suspend

3. All of the above

4. A piece of magnetic substance

Q.

Nikhilesh has a strange piece which can attract many objects including some non-magnetic substances. What are the things would he need to find whether it is a magnet or not?

1. A piece of magnetic substance

2. A magnet or a compass

3. A piece of non-magnetic substance

4. He does not require anything more

Q.

Which of the following statement is correct?

1. Bar magnets point towards North-South direction when suspended freely.

2. The strength of a magnet near the centre is maximum.

3. Rubber is a magnetic material.

4. Steel is not a magnetic material.