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Magnetism and Matter

CBSE · Class 12 · Physics

Complete topic list for Magnetism and Matter in CBSE Class 12 Physics. Key concepts, sub-topics, and what to focus on for board exams.

98 questions60 flashcards5 concepts

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A comparison chart (table-like infographic) summarizing the key properties of diamagnetic, paramagnetic, and ferromagnetic materials, including their magnetic susceptibility, relative permeability, be
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4 Topics · CBSE Class 12 Physics

Topics in Magnetism and Matter

1

1. Basic ideas about magnets

  • The earth behaves like a magnet and its magnetic field points approximately from geographic south to north.
  • A freely suspended bar magnet aligns along the north-south direction.
  • Like poles repel and unlike poles attract.
2

2. Magnetic field lines and their properties

  • Magnetic field lines of a magnet or solenoid form continuous closed loops.
  • The tangent to a field line at a point gives the direction of the magnetic field at that point.
  • Closer field lines mean stronger magnetic field.
3

3. Bar magnet as an equivalent solenoid

  • A bar magnet and a finite solenoid show similar field patterns at large distances.
  • The axial field of a finite solenoid resembles that of a bar magnet.
  • The magnetic moment of a bar magnet is equal to the magnetic moment of an equivalent solenoid that produces the same magnetic field.
4

4. Torque and magnetic potential energy

  • A magnetic dipole in a uniform magnetic field experiences torque.
  • The torque tends to align the magnetic moment with the field.
  • Force on the dipole in a uniform field is zero, but torque can be non-zero.

Key Concepts

Central concept: Magnetism and Matter

Introduction to magnetismBar magnetMagnetic field linesDipole in uniform magnetic fieldEquivalent solenoidGauss's law of magnetismMagnetisation and magnetic intensityMagnetic susceptibility and permeability

Frequently Asked Questions

What are the important topics in Magnetism and Matter for CBSE Class 12 Physics?
Magnetism and Matter covers several key topics that are frequently asked in CBSE Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Magnetism and Matter — CBSE Class 12 Physics?
Understand the core concepts first, then work through the 98 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All 14 chapters — CBSE Class 12 Physics Syllabus

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