Magnetic Force

Q. Why docs a freely suspended magnet always rest in north- south direction ?

Q.

What are the two magnetic forces?

Q. Why is it so that bar magnet always points towards north - south direction ?

Q.

How does the strength of a bar magnet change along its length?

Q.

Why a magnet can act from distance?

Q.

Two like magnetic poles ________.

Q. Why docs a freely suspended magnet always rest in north- south direction ?

Q. Which material can be made magnetic by hammering or stroking it with another magnet?
1. Glass rod
2. Copper wire
3. Iron nail
4. Lead tube

1. Only 1
2. Only 3
3. 1 and 4
4. 2 and 3

Q. North pole of an unmarked magnet can be identified by:

1. Another magnet having its poles marked.
2. Another magnet having its poles unmarked.
3. Using an iron bar.
4. Using iron filings.

Q.

A magnet can repel another magnet but an iron object cannot.

1. True
2. False

Q.

Which of the following is not true for a magnet?

1. Like poles attract each other

2. Like poles repel each other

3. Unlike poles attract each other

4. Both b and c

Q.

Question 2 (i)

State whether the following statement is true or false.
A cylindrical magnet has only one pole.

Q.

A boy while playing with two magnets got familiar with their attractive and repulsive properties. He observed the magnets attracting and repelling each other from a distance. From this, we can conclude that

Q.

Is it possible to obtain a single magnetic pole?

Q. Magnets cannot attract substances like iron, nickel and cobalt.

1. True
2. False

Q.

The force exerted by magnets are always attractive in nature.

1. True
2. False

Q.

Which type of force is magnetic force?

Q.

Select the correct non-conservative force from the following options?

1. Force of friction

2. Magnetic force

3. Gravitational force

4. Electrostatic force

Q.

Unlike poles of magnets ___ each other.

Q. A magnet always has two poles. Therefore it is called a/an
(a) dipole
(b) artificial magnet
(c) horseshoe magnet
(d) bar magnet

Q. Which type of force is exerted by a stationary magnet on a piece of iron kept near it?

1. Electrostatic force
2. Frictional force
3. Magnetic force
4. Muscular force

Q. a magnetic field can exert force on:
a moving object
stationary object
moving charge
all these above

Q. Name the forces involved in the following situations and categorize them as contact and non-contact forces.

Q.

North pole of one magnet attracts south pole of another magnet.

1. True
2. False

Q.

North pole of one magnet attracts south pole of another magnet.

1. True
2. False

Q.

A magnet always has ___ pole(s).

Q. Which of the following statements is correct for the given pictures?

1. In A: Cars 1 and 2 will move away from each other
   In B: Cars 3 and 4 will come closer to each other
   
   
2. In A: Cars 1 and 2 will come closer to each other
   In B: Cars 3 and 4 will move away from each other
   
   
3. In A: Cars 1 and 2 will move away from each other
   In B: Cars 3 and 4 will move away from each other
   
4. In A: Cars 1 and 2 will come closer to each other
   In B: Cars 3 and 4 will come closer to each other
   

Q. Like poles of magnets each other, while unlike poles each other.

1. repel
2. attract
3. electrify
4. magnetise

Q. How is the direction of a magnetic field at a point determined ?

Q. Which of the following statements is correct for the given pictures?

1. In A: Cars 1 and 2 will come closer to each other
   In B: Cars 3 and 4 will come closer to each other
   
2. In A: Cars 1 and 2 will move away from each other
   In B: Cars 3 and 4 will move away from each other
   
3. In A: Cars 1 and 2 will move away from each other
   In B: Cars 3 and 4 will come closer to each other
   
   
4. In A: Cars 1 and 2 will come closer to each other
   In B: Cars 3 and 4 will move away from each other