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AHSEC Physics Syllabus 2025-26: Assam Board 12th Chapter-wise PDF
The Assam Higher Secondary Education Council prescribed the AHSEC physics syllabus 2025-26. Students who want to appear for the Assam AHSEC board examination must go through the physics syllabus if they have applied for the science stream. Out of 100 marks, 70 are allotted for the theory exam, and 30 marks for the practical exam.
This Story also Contains
- AHSEC Physics 2025-26 Syllabus: Unit-Wise Chapter Names
- Detailed AHSEC Physics Syllabus 2025-26
- Syllabus for AHSEC Physics Practical Exam
The AHSEC board includes 9 units in the Physics syllabus 2025-26 covering topics like electrostatics, current electricity, magnetic effects of current and magnetism, electromagnetic induction and alternating currents, electromagnetic waves, optics, dual nature of radiation and matter, atoms and nuclei, and electronic devices. Read the article to learn more about the 2025-26 chapter-wise.
Note: We have given the AHSEC Physics syllabus chapter-wise and topic-wise below as per the 2025-26 latest syllabus available on the official website.
AHSEC Physics 2025-26 Syllabus: Unit-Wise Chapter Names
Units | Chapter Names |
Unit I: Electrostatics | Chapter 1: Electric Charges and Fields |
Chapter 2: Electrostatic Potential and Capacitance | |
Unit II: Current Electricity | Chapter 3: Current Electricity |
Unit III: Magnetic Effects of Current and Magnetism | Chapter 4: Moving Charges and Magnetism |
Chapter 5: Magnetism and Matter | |
Unit IV: Electromagnetic Induction and Alternating Currents | Chapter 6: Electromagnetic Induction |
Chapter 7: Alternating Current | |
Unit V: Electromagnetic Waves | Chapter 8: Electromagnetic Waves. |
Unit VI: Optics | Chapter 9: Ray Optics and Optical Instruments |
Chapter 10: Wave Optics. | |
Unit VII: Dual Nature of Radiation and Matter | Chapter 11: Dual Nature of Radiation and Matter |
Unit VIII: Atoms and Nuclei | Chapter 12: Atoms |
Chapter 13: Nuclei | |
Unit IX: Electronic Devices | Chapter 14: Semiconductor-Electronics: Materials, Devices, and Simple Circuits |
Detailed AHSEC Physics Syllabus 2025-26
Check out the detailed Assam AHSEC syllabus 2025-26 for the Physics subject unit-wise.
Chapter 1: Electric Charges and Fields
Electric Charges - Conservation of charge, Coulomb's law-force between two point charges, Forces between multiple charges; Superposition principle and continuous charge distribution.
Electric field - Electric field due to a point charge, Electric field lines, electric dipole, Electric field due to a dipole, Torque on a dipole in a uniform electric field.
Electric flux - Statement of Gauss's theorem and its applications to find the field due to an infinitely long straight wire, a uniformly charged infinite plane sheet and a uniformly charged thin spherical shell (inside and outside).
Chapter 2: Electrostatic Potential and Capacitance
Electric potential, potential difference, electric potential due to a point charge, a dipole and a system of charges; equipotential surfaces, electrical potential energy of a system of two-point charges and an electric dipole in an electrostatic field.
Conductors and insulators, free charges and bound charges inside a conductor. Dielectrics and electric polarisation, capacitors and capacitance, combination of capacitors in series and parallel, capacitance of a parallel plate capacitor with and without dielectric medium between the plates, energy stored in a capacitor.
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Download EBookChapter 3: Current Electricity
Electric current, flow of electric charges in a metallic conductor, drift velocity, mobility and their relation with electric current;
Ohm's law, electrical resistance, combination of resistance(series and parallel), V-I characteristics (linear and non-linear), electrical energy and power, electrical resistivity and conductivity, temperature dependence of resistance.
Internal resistance of a cell, potential difference and emf of a cell, combination of cells in series and parallel, Kirchhoff's laws and simple applications, Wheatstone bridge
Chapter 4: Moving Charges and Magnetism
Concept of magnetic field, Oersted's experiment.
Biot-Savart law and its application to a current-carrying circular loop.
Ampere's law and its applications to an infinitely long straight wire.
Straight solenoids (only qualitative treatment), force on a moving charge in uniform magnetic and electric fields.
Force on a current-carrying conductor in a uniform magnetic field, force between two parallel current-carrying conductors-definition of ampere, torque experienced by a current loop in a uniform magnetic field;
Current loop as a magnetic dipole and its magnetic dipole moment, moving coil galvanometer-its current sensitivity and conversion to ammeter and voltmeter.
Chapter 5: Magnetism and Matter
Bar magnet, bar magnet as an equivalent solenoid (qualitative treatment only).
Magnetic field intensity due to a magnetic dipole (bar magnet) along its axis and perpendicular to its axis (qualitative treatment only), torque on a magnetic dipole (bar magnet) in a uniform magnetic field (qualitative treatment only), and magnetic field lines.
Magnetic properties of materials-Para-, dia-and ferro-magnetic substances with examples, Magnetisation of material.
Chapter 6: Electromagnetic Induction
Electromagnetic induction;
Faraday's laws, induced EMF and current;
Lenz's Law, Self and mutual induction.
Chapter 7: Alternating Current
Alternating currents, peak and RMS value of alternating current/voltage;
Reactance and impedance;
LCR series circuit (Phasor treatment only)resonance;
Power in AC circuits.
AC generator and transformer.
Power factor, Wattles current.
Chapter 8: Electromagnetic Waves
Basic idea of displacement current, Electromagnetic waves, their characteristics, their Transverse nature (qualitative ideas only).
Electromagnetic spectrum (radio waves, microwaves, infrared, visible, ultraviolet, X-rays, gamma rays), including elementary facts about their uses.
Chapter 9: Ray Optics and Optical Instruments
Ray Optics: Reflection of light, spherical mirror and mirror formula. Refraction of light, total internal reflection and its applications, optical fibres, refraction at spherical surfaces, lenses, thin lens formula, Lens maker's formula, magnification, power of a lens, combination of thin lenses in contact, refraction of light through a prism.
Optical instruments: Microscopes and astronomical telescopes (reflecting and refracting) and their magnifying powers.
Chapter 10: Wave Optics
Wave front and Huygen's principle, reflection and refraction of a plane wave at a plane surface using wave fronts.
Proof of laws of reflection and refraction using Huygen's principle.
Interference, Young's double slit experiment and expression for fringe width (no derivation, final expression only), coherent sources and sustained interference of light, diffraction due to a single slit, width of central maximum (qualitative treatment only)
Chapter 11: Dual Nature of Radiation and Matter
Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations;
Einstein's photoelectric equation-particle nature of light.
Experimental study of the photoelectric effect.
Matter waves-wave nature of particles, de-Broglie relation.
Chapter 12: Atoms
Alpha-particle scattering experiment;
Rutherford's model of the atom, Bohr's model, and Bohr’s model of the hydrogen atom.
Expression of radius of nth orbit, velocity and energy of electron, hydrogen spectra (qualitative treatment only).
Chapter 13: Nuclei
Composition and size of nucleus, Nuclear force, Mass-energy relation, mass defect, binding energy per nucleon and its variation with mass number, nuclear fission, nuclear fusion.
Chapter 14: Semiconductor Electronics: Materials, Devices and Simple Circuits
Energy bands in conductors, semiconductors and insulators (qualitative ideas only). Intrinsic and extrinsic semiconductors, p-type and n-type, p-n junction.
Semiconductor diode, I-V characteristics in forward and reverse bias, application of junction diode: diode as a rectifier.
Syllabus for AHSEC Physics Practical Exam
In the AHSEC Assam board exam, each student will have to perform 8 experiments and 8 activities, i.e., 4 from each section, during the academic year. Check out the list of experiments and activities.
Section A - AHSEC Physics Practical Syllabus
Experiments | Activities |
To observe the variation of potential difference (V) across a given resistor by changing the current (I) through it. Draw an I-V graph and find the value of the given resistance from the graph. | To observe the deflection of a magnetic needle placed near a conductor carrying current. |
To find the value of a given resistance by using a metre bridge. | To measure resistance, dC voltage, dC current and check the continuity of a given electrical circuit using a multimeter. |
Construct a potential divider with the help of a rheostat and a battery (or cell) and use it to verify Ohm's Law. | To assemble a household circuit comprising three bulbs, three on/off switches, a fuse and a power source. or Assemble an extension board with an indicator, a fuse, three plug points and three on/off switches. |
Place a bar magnet in the magnetic meridian and draw the field lines with it. (i) The North pole points towards the geographical north. (ii) South pole pointing towards the geographical north on one side of the magnet, and to locate the position of the neutral point. | To study the variation in potential drop with the length of a wire for a steady current. |
Assemble an electric circuit comprising of least a battery, rheostat, key, ammeter and voltmeter. Mark the components that are not connected in proper order and correct the circuit, and also draw the correct circuit diagram. |
Section B - AHSEC Practical Syllabus for Physics
Experiments | Activities |
To find the focal length of a convex lens by plotting graphs between u and [Taken three readings making u > and three readings making u < .] | To identify resistance from resistance colour codes and to verify the values using a multimeter. |
To find the focal length of a concave lens using a convex lens. | To identify a diode, an LED, a transistor, a resistor, a capacitor and an IC from a mixed collection of such items using a multimeter. |
To find the angle of minimum deviation for a given equilateral prism by plotting a graph between the angles of incidence (i) and corresponding angles of deviation (). Determine the refractive index of the material of the prism. [Take angles of incidence as 350, 400, 450, 500, 550, 600] | To observe refraction and lateral deviation of a beam of light incident obliquely on a glass slab. |
Measure the angles of incidence (i) and corresponding angles of refraction (r) for a glass slab by the pin method. Draw a sin i–sin r graph and find the refractive index of the material of the glass slab from the graph. | To observe the polarisation of light using two polaroids. |
Draw the I-V characteristics graph of a p–n junction in forward bias. Find the DC forward resistance of the diode from the graph. | Identify a concave and a convex mirror by observing the images formed by the mirrors. |
To study the nature and size of the image formed by (i) a convex lens, (ii) a concave mirror, using an optical bench. | |
Identify a concave and a convex mirror by the image formed by the mirrors. |
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Frequently Asked Questions (FAQs)
Q: What is the annual exam marks categorisation of the Assam AHSEC?
A:
The board allotted 100 marks for the Physics exam, where 70 marks are for the theory and 30 marks are for the practical exam.
Q: How many units and chapters are there in the Assam AHSEC Physics syllabus 2025-26?
A:
There are 9 units and 14 chapters included in the AHSEC syllabus for the Physics subject.
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Have a question related to Assam AHSEC ?
The AHSEC 12th Exam is the Higher Secondary (HS) Final Examination conducted by the Assam Higher Secondary Education Council for students in Class 12 across various streams like Science, Commerce, Arts, and Vocational in the state of Assam.
If you missed the Assam AHSEC exam due to genuine medical emergency then you must contact your respective school authorities and talk to the Assam board immediately. Other than that, you will have to submit a medical certificate and an application for proof. After that, the board will decide and might allow you to take the special exam.
Yes, the Assam HS (Higher Secondary) exam will be held in 2025 from February 13 to March 17. Assam HS exams will be conducted in two shifts: morning (9:00 AM to 12:00 PM) and afternoon (1:30 PM to 4:30 PM).
No, students are not allowed to sit for the Assam HS exam without the admit card. The Assam board releases the Assam AHSEC admit card on the official website, ahsec.assam.gov.in, you can login and download it or you can also contact your respective school authorities directly for a replacement.
Hello,
The eligibility for engineering candidates are 1) they must have scored at least 60% in class 12. 2) Candidates must have completed their 12th in science stream with maths, physics and chemistry as a part of their subjects.
You do not need to reappear for all the exams. You can appear only for the subjects that are main in the eligibility for engineering. The main subjects are Physics, Chemistry and Maths. You can appear for these examinations only and also if you are sure that these subjects plus the other subjects included will give you a percentage of more than 60% then you don't have to give any other exam.
I hope this helps,
All the best
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