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- Pages: 12
- File Size: 5 MB
- Format: PDF
These notes make the complex concepts of magnetism and matter easy to grasp and revise.
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Basic Details of Chapter 5: Magnetism and Matter Class 12 Physics Notes
| Features | Details |
|---|---|
| Name of the Notes | Chapter 5: Magnetism and Matter Class 12 Physics Notes |
| Class Name | Class 12 |
| Subject Name | Physics |
| Chapter Name | Chapter 5: Magnetism and Matter Class 12 Physics Notes |
| Language of the Notes | English |
| Total Pages | 12 Pages |
| PDF Size | 5 MB |
| Website | StudyCart24.com |
Why Choose These Handwritten Notes?
- Concise and Comprehensive: Covers all important concepts and derivations.
- Visually Engaging: Includes diagrams, illustrations, and color-coded highlights.
- Free and Accessible: Completely free of cost, with no sign-up required.
- Aligned with NCERT: Follows the NCERT syllabus to ensure relevance.
- Suitable for All Exams: Useful for CBSE, NEET, JEE, and state board exams.
Chapter Summary: Magnetism and Matter
1. Introduction to Magnetism
- Magnetism refers to the force exerted by magnets when they attract or repel each other.
- Earth itself acts as a giant magnet with a magnetic field.
2. Bar Magnet
- Bar magnets are the simplest type of magnets with two poles: North and South.
- Magnetic Dipole Moment (M): M=m×2l,M = m \times 2l, where $m$ is the pole strength and $2l$ is the length of the magnet.
3. Magnetic Field
- A region around a magnet where its influence can be felt.
- Magnetic field lines originate from the North Pole and end at the South Pole.
- Properties of magnetic field lines:
- Never intersect.
- Denser lines indicate a stronger magnetic field.
4. Earth’s Magnetism
- Components:
- Magnetic Declination: Angle between geographic and magnetic meridian.
- Inclination or Dip: Angle made by Earth’s magnetic field with the horizontal plane.
- Causes: Believed to arise from electric currents in the Earth’s core.
5. Magnetization and Magnetic Intensity
- Magnetization (M): M=mV,M = \frac{m}{V}, where $m$ is the net magnetic moment and $V$ is the volume.
- Magnetic Intensity (H): H=Bμ0−M,H = \frac{B}{\mu_0} – M, where $B$ is the magnetic field and $\mu_0$ is the permeability of free space.
6. Magnetic Materials
- Diamagnetic: Weakly repelled by a magnetic field (e.g., copper, gold).
- Paramagnetic: Weakly attracted by a magnetic field (e.g., aluminum, platinum).
- Ferromagnetic: Strongly attracted by a magnetic field (e.g., iron, cobalt, nickel).
7. Hysteresis Curve
- Represents the relationship between magnetization and magnetic intensity.
- Key points:
- Retentivity: Residual magnetism after the external field is removed.
- Coercivity: Intensity of the external field required to demagnetize.
Topics Covered in Magnetism and Matter Notes
| Topic | Explanation |
|---|---|
| Bar Magnet | Magnetic dipole moment, properties, and behavior in a field. |
| Earth’s Magnetism | Declination, inclination, and causes. |
| Magnetic Materials | Differences between diamagnetic, paramagnetic, and ferromagnetic substances. |
| Hysteresis | Characteristics of magnetic materials under cyclic magnetization. |
FAQs: Magnetism and Matter
1. What is magnetism and matter?
Magnetism and Matter deals with the magnetic properties of materials and how magnets interact with matter. It explores the Earth’s magnetism, magnetic properties of materials, and applications in real life.
2. What are the topics of magnetism and matter class 12?
The main topics include:
- Bar magnets
- Earth’s magnetism
- Magnetic properties of materials
- Magnetization and intensity
- Hysteresis loop
3. Which chapter is magnetism and matter?
It is Chapter 5 of Class 12 Physics, focusing on the magnetic behavior of materials and Earth’s magnetic properties.
4. What is the name of Chapter 5 of physics?
The name of Chapter 5 in Class 12 Physics is Magnetism and Matter.
File Details
- Pages: 12
- File Size: 5 MB
- Format: PDF
How to Download Magnetism and Matter Class 12 Notes PDF
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Important Questions from Magnetism and Matter
- Explain the Earth’s magnetic elements: declination, inclination, and horizontal component.
- Differentiate between diamagnetic, paramagnetic, and ferromagnetic materials.
- Describe the hysteresis loop and its significance.
- Derive the expression for the magnetic field at a point on the axial line of a bar magnet.
- Why does a freely suspended bar magnet point towards the north-south direction?
Additional Resources
- Magnetism and Matter NCERT Solutions
- Practice Questions for Board Exams
- Previous Year Questions for NEET and JEE
Conclusion
These Magnetism and Matter Class 12 Notes are an essential resource for students aiming for excellence in physics. The handwritten format, combined with comprehensive content, ensures a thorough understanding of the chapter. Download now and take a step closer to acing your exams!
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