Magnetic Force

Q.

What are some examples of Non-Magnetic materials?

Q.

What are like poles and what are unlike poles?

Q.

What would happen if we bring the like poles of two bar magnets close to each other?

1. They repel

2. They attract

3. They both burn

4. Nothing happens

Q.

The method of making a temporary magnet by rubbing a magnet with the magnetic substance is known as

1. Single-touch method

2. Double-touch method

3. Magnetic induction method

4. Electrical method

Q.

Do magnets attract steel?

1. Yes

2. No

Q.

If you bring the north pole of one magnet close to the south pole of another magnet, they:

1. Repel

2. Go through each other

3. Explode

4. Attract

Q.

Which of the following is a natural magnet?

1. Iron

2. Magnetic needle

3. Bar magnet

4. Magnetite

Q.

Which of the following substances are attracted by a magnet?

1. Paper

2. Iron
3. Cloth

4. Wood

Q.

Some metallic objects are attracted by magnets.

1. True

2. False

Q.

On what factors does the work done by a force depend?

Q.

Magnetic force is a type of ___ force.

1. Contact

2. Non-Contact

3. Weak

4. Strong

Q.

The two poles of a magnet are named as:

1. East Pole, West Pole

2. North Pole and East Pole

3. North Pole, South Pole

4. South Pole and West Pole

Q.

A stationary magnet does not interact with?

Q.

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

1. single touch

2. double touch

3. using electric current

4. by induction

Q.

It was observed that a pencil sharpener gets attracted by both the poles of a magnet although its body is made of plastic. Name a material that might have been used to make some part of it.

Q.

What is magnetism?

Q.

A magnet attracting iron pins is an example of ______.

1. magnetic force

2. metallic force

3. upward pull

4. gravitational force

Q.

Like poles of a magnet ______ and unlike poles ________.

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

Q.

In a magnet, like poles ___ and unlike poles ___.

1. are stronger, are weaker

2. attract, repel

3. move, don't move

4. repel, attract

Q.

What is detected when you use a magnetic compass?

1. Temperature

2. Weight

3. Gravity

4. Magnetic field

Q.

The like poles of a magnet repel each other.

1. True
2. False

Q.

For having magnetic force between two magnets, they should be in contact.

1. True

2. False

Q. force between two identical short bar magnets whose centers are r metres apart is 4.8 Newton when their axis are in the same line if the seperation is increased to 2r metre the force between them is reduced to

Q.

What is the force that magnets apply on each other or other objects?

1. Gravitational Force

2. Spring Force

3. Upward pull

4. Magnetic force

Q.

All magnets have two ____.

1. gates

2. sounds

3. poles

4. locks

Q.

The properties by virtues of which magnetic substance attract iron and other materials such as Cobalt and Nickel is called

Q.

State two property of magnet.

Q.

The strength of a magnet is ___________ at its poles.

Q.

How would mapping of the lines of force differ in two bar magnets of unequal pole strength?
On the basis of this concept, explain the statement ‘Magnetic induction is directly proportional to the strength of the inducing magnet.’

Q.

The part of the bar magnet labelled N is known as:

1. Nerve Pole

2. Needle Pole

3. New Pole

4. North Pole