Magnetism and Matter Practice Questions
Class 12 · Physics · 2260 free MCQs with instant results and detailed explanations.
2260
Total
742
Easy
1131
Medium
387
Hard
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Topics in Magnetism and Matter
Bar Magnet
721
Earth's Magnetism
790
Magnetic Properties of Materials
749
Sample Questions from Magnetism and Matter
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What happens to a bar magnet when it is cut into two equal halves?
A.
It forms two magnets with north and south poles.
B.
It loses its magnetic properties.
C.
It forms one magnet with two north poles.
D.
It forms one magnet with two south poles.
Show Answer & Explanation
Correct Answer: A
When a bar magnet is cut, each half becomes a new magnet with its own north and south poles.
Q2
Easy
Which of the following describes the behavior of a bar magnet when placed in a magnetic field?
A.
It aligns itself with the field.
B.
It moves randomly.
C.
It becomes demagnetized.
D.
It repels the field.
Show Answer & Explanation
Correct Answer: A
A bar magnet will align itself with the external magnetic field due to magnetic torque acting on it.
Q3
Easy
What is the SI unit of magnetic dipole moment?
A.
Tesla
B.
Ampere
C.
Henry
D.
Ampere-meterยฒ
Show Answer & Explanation
Correct Answer: D
The magnetic dipole moment has the SI unit of Ampere-meterยฒ (Aยทmยฒ).
Q4
Medium
If a bar magnet is cut into two equal halves, how does the magnetic moment of each piece compare to the original?
A.
Remains the same
B.
Halves
C.
Doubles
D.
Quadruples
Show Answer & Explanation
Correct Answer: B
When a bar magnet is cut in half, each piece retains half the magnetic moment of the original magnet.
Q5
Medium
What happens to the poles of a bar magnet when it is broken into two pieces?
A.
Poles disappear
B.
Two new poles are formed
C.
Only north pole remains
D.
Only south pole remains
Show Answer & Explanation
Correct Answer: B
When a magnet is broken, each piece becomes a new magnet with its own north and south pole.
Q6
Medium
A bar magnet is placed vertically in a magnetic field and experiences a force. What will happen if the magnet is rotated 180ยฐ?
A.
Force reverses direction
B.
Force remains same
C.
No force acts
D.
Magnet gets demagnetized
Show Answer & Explanation
Correct Answer: A
Reversing the magnet's orientation in the magnetic field flips the direction of the magnetic force acting on it.
Q7
Medium
If two bar magnets are placed with like poles facing each other, what will be the resulting force between them?
A.
Attractive
B.
Repulsive
C.
No interaction
D.
Depends on distance
Show Answer & Explanation
Correct Answer: B
Like poles of magnets repel each other, leading to a repulsive force between the two bar magnets.
Q8
Hard
If a bar magnet is cut into two equal halves, what happens to the magnetic moment of each half compared to the original magnet?
A.
It remains the same
B.
It doubles
C.
It halves
D.
It becomes zero
Show Answer & Explanation
Correct Answer: C
When a bar magnet is cut into two equal halves, each half becomes a new magnet with its own magnetic moment that is half of the original magnet's magnetic moment.
Q9
Hard
Two bar magnets of equal length and strength are placed parallel to each other with like poles facing. What is the nature of the force acting between them?
A.
Attractive
B.
Repulsive
C.
No force
D.
Depends on distance
Show Answer & Explanation
Correct Answer: B
Like poles of magnets repel each other, thus when two bar magnets have their like poles facing, they exert a repulsive force.
Q10
Hard
A bar magnet is rotated in a magnetic field at a frequency of 2 Hz. What is the angular velocity (in radians per second) of the magnet?
A.
2ฯ rad/s
B.
4ฯ rad/s
C.
ฯ rad/s
D.
6 rad/s
Show Answer & Explanation
Correct Answer: A
Angular velocity ฯ can be calculated using the formula ฯ = 2ฯf. Here, f = 2 Hz, thus ฯ = 2ฯ * 2 = 4ฯ rad/s.
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Other Class 12 Subjects
Magnetism and Matter โ Class 12 Physics Practice Questions Online
This page contains 2260 practice MCQs for the chapter Magnetism and Matter in Class 12 Physics. The questions are organized by difficulty โ 742 easy, 1131 medium, 387 hard โ so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 3 topics, giving you comprehensive coverage of the entire chapter.