Important Chapters and Topics of Physics for Class 12th Board Exam

physics practical book class 12

The class 12th board examinations are closer now, and students must prepare hard for the upcoming exam. It is a known fact that Physics is one of the crucial subjects for students in general. It not only challenges their preparations but also helps them shape their careers. Most

To perform well in the Physics exam, it is important to keep track of every topic asked in previous examinations. Do you know the frequently asked question and topics in each examination? If not, then don’t panic. We have come up with the most important chapters and their topics for your help. Moreover, we have mentioned a few tips for approaching each topic, which will help you nourish your preparation.

Before you start the syllabus, get your revision notes, syllabus, reference book, Physics Practical Book Class 12th, and other related study material to understand each chapter better.


Chapter 1- Electronic Charges & Field

1. Coulomb’s Law

2. Electric dipole’s electric field on the equatorial point

3. Electric dipole’s electric field on the axial point

4. Gauss Law of applications

5. Effect of the electric dipole on the external electric field

Chapter 2- Electrostatic Potential & Capacitance

1. Equipotential Surface

2. Electric potential due to the system of charges and electric dipole

3. Energy stored in capacitors

4. Combination of different capacitors

5. Effect of Dielectric on capacitors


Chapter 3- Current Electricity

1. Ohm’s Law & its limitations

2. The resistivity of different kinds of materials

3. Combinations of cells & combination o resistors

4. Kirchoff’s Law

5. Meter Bridge (Important)

6. Potentiometer

Tip– You can be asked to demonstrate the working of a meter bridge or determine the resistivity of different wires by making a graph between their potential difference V/s. Current. In this case, the physics practical book class 12th can help you understand it.


 Chapter 4- Moving Charges & Magnetism

1. Magnetic force on a wire carrying current

2. Motion in a magnetic field

3. Cyclotron

4. Velocity selector

5. Ampere’s Circuital Law

6. The force between 2 parallel wires carrying current

7. Moving coil galvanometer

Tip– A long question about Moving coil galvanometer is frequently asked in the examination.

Chapter 5- Magnetism & Matter

1. Electric dipole in a uniform magnetic field

2. The axial magnetic field of a bar magnet, as a solenoid

3. Hysteresis

4. Ferromagnetic, Diamagnetic & Paramagnetic substances


Chapter 6- Electromagnetic Induction

1. Len’s Law

2. Faraday’s Law of induction

3. Magnetic Flux

4. Motional EMF

5. Self-inductance

6. Mutual inductance

Chapter 7-Alternating Current

1. LC,RC, LCR & LR Circuits

2. Power Factor

3. Transformers

4. LC Oscillations

5. Resonance


Chapter 8- Electromagnetic Waves

1. Electromagnetic Waves & its nature

2. Displacement Current


Chapter 9- Ray Optics & Optical Instruments

1. Image formation by spherical mirror & lenses

2. Power of lenses

3. Combination of lenses

4. TIR (Total internal reflection)

5. Refraction from prism

6. Eye

7. Microscope

8. Telescope

Tip– The paper can ask you to find the focal length of a concave or convex lens using different methods. For a detailed explanation of the experiment, students can take the physics practical book class 12 as a reference.

Chapter 10- Wave Optics

1. Addition of coherent and incoherent waves

2. Refraction & Reflection of the plane using Hyugen’s principle

3. Young’s double-slit experiment

4. Diffraction of light

5. Polarisation from scattering


Chapter 11- Dual Nature of Radiation & Matter

1. Photoelectric effect

2. de-Broglie hypothesis

3. Davison & German Experiment

4. Einstein photoelectric equation


Chapter 12- Atoms

1. Atomic spectra

2. Electron Orbits

3. Bohr’s Model

4. Line spectra

5. De Broglie’s explanation of Bohr’s postulate

Chapter 13- Nuclei

1. Nuclear binding energy

2. Radioactivity & Radioactivity decay


Chapter 14- Semiconductor Electronics: Materials, Devices, and Simple Circuits

1. Intrinsic & Extrinsic semiconductors

2. P-n junction diode

3. P-n junction in forward & reverse bias

4. Junction diode as a rectifier

5. Logic gates

6. Transistor as an amplifier

7. Zener diode

8. Voltage regulator

Tip– Students can be asked to plot the I-V graph of the p-n junction in forward and reverse bias. In this regard, they can refer to the physics practical book class 12 for detailed explanations of the experiment. Also, p-n junction forward and reverse bias can be asked as long questions in board examinations.

UNIT X- Communication Systems

Chapter 15- Communication Systems

1. Different elements of a communication system

2. EM waves propagation

3. AM (Amplitude Modulation)

4. Different terminologies in a communication system.


Having someone by your side is great while preparing for an important exam. The mentioned references can help you much. You can refer to the above topics, which are essential for the class 12th physics board examination.

Also Read: Tips To Score Full Marks In Class 9th Maths Exam

Along with revising these topics, you can prepare for numerical and derivations, as they are frequently asked in the exams. Moreover, you can prioritize completing maximum weightage topics earlier, which will help you to complete your syllabus steadily.

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