# Physics Quiz on Magnetism for IIT JEE, NEET, Medical & Engineering Exam

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## Physics Quiz on Magnetism

Physics Quiz on Magnetism: Previous trends reveal that NEET aspirants find Physics as the most challenging section amongst the other sections. But most of them fail to decipher the reason behind this. This particularly can be as the candidates taking up this examination are predominantly medical aspirants with their subject of interest being Biology. Also, sections like Physics are more on theories, laws, numerical as opposed to Biology which is more of fact-based, life sciences and comprising of substantial explanations. In this post we are providing you Physics quiz on Magnetism.

## Physics Quiz on Magnetism

1. Which of the following statements is true about magnetic lines of force?

1. Magnetic lines of force are always closed.
2. Magnetic lines of force always intersect each other.
3. Magnetic lines of force tend to crowd far away from the poles of the magnet
4. Magnetic lines of force do not pass through the vacuum.

(1) Magnetic lines of force are always closed.

2. What is the work done by the magnet of moment M if it is rotated through 3600 in magnetic field H?

1. 2MH
2. MH
3. 2πMH
4. Zero

(2) Zero

3. Magnetic lines of force of a bar magnet do not intersect because

1. The lines have similar charges hence they repel each other
2. The lines always diverge from a single point
3. A point always has a single net magnetic field
4. The lines need magnetic lenses to intersect

(3) A point always has a single net magnetic field

4. Which of the following materials is the most suitable for making a permanent magnet?

1. Soft Iron
2. Nickel
3. Copper
4. Steel

(4) Steel

5. A sensitive magnetic field instrument can be effectively shielded from the external magnetic field by placing it inside which of the following materials?

1. Plastic Material
2. Teak Wood
3. Soft Iron of high permeability
4. A metal of high conductivity

(3) Soft Iron of high permeability

6. Which of the following is the unit of magnetic flux density?

1. Weber/meter2
2. Tesla
3. Newton/ampere-metre
4. All of the above

(2)Tesla

7. The magnetism of a magnet is due to

1. earth
2. cosmic rays
3. due to pressure of big magnet inside the earth
4. spin motion of electrons

(4) spin motion of electrons

8. A long magnet is cut into two parts such that the ratio of their lengths is 2:1. What is the ratio pole strength of both the section?

1. 1:2
2. 2:1
3. 4:1
4. Equal

(4) Equal

9. Which of the following statements is true about magnetic field intensity?

1. Magnetic field intensity is the number of lines of force crossing per unit volume.
2. Magnetic field intensity is the number of lines of force crossing per unit area.
3. Magnetic field intensity is the magnetic induction force acting on a unit magnetic pole.
4. Magnetic field intensity is the magnetic moment per unit volume.

(3) Magnetic field intensity is the magnetic induction force acting on a unit magnetic pole

10. What happens to the magnetic needle kept in a non-uniform magnetic field?

1. It experiences force but not torque
2. It experiences torque but not force
3. It experiences both force and torque
4. It neither experiences force nor torque

(1) It experiences force but not torque

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