AHSEC Physics Syllabus 2025-26: Assam Board 12th Chapter-wise PDF

AHSEC Physics 2026 Syllabus: Unit-Wise Chapter Names

Detailed AHSEC Physics Syllabus 2026

Check out the detailed Assam AHSEC syllabus 2026 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 a dielectric medium between the plates, energy stored in a capacitor.

Chapter 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, and 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 the 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

Section B - AHSEC Practical Syllabus for Physics

Also, check -

• Assam HS Routine

• Assam HS Admit Card

• AHSEC Passing Marks Grading System

• AHSEC Exam Pattern