NEB Class 12 Physics study guide
NEB Class 12 Physics · Work through your exam, one topic at a time.
NEB Class 12 Physics (कक्षा १२ भौतिकशास्त्र) is the Physics paper of the Grade 12 annual examination run under the National Examinations Board (NEB), Sanothimi, Bhaktapur, with the Examination Control Office (Classes 11 and 12) handling the paper. It is taken by students who have completed Grade 11 science study and need a Grade 12 science result for university admission, technical training, or re-sitting a subject. The NEB Class 12 Physics study guide has 6 sections and about 1,828 words.
01Mechanics: rotation, oscillation and fluids
NEB Class 12 Mechanics tests rigid-body rotation, simple harmonic motion and fluid statics. Expect numericals on moment of inertia, torque, angular momentum, pendulum or spring-mass period, pressure and buoyancy, plus short conceptual explanations.
318 words, about 2 min02Heat and Thermodynamics: laws, processes and engines
NEB Class 12 Heat and Thermodynamics examines the first law, thermodynamic processes, kinetic theory, heat engines and transfer. Numerical questions often combine gas laws with energy accounting; short answers test why processes are isothermal, adiabatic or cyclic.
310 words, about 2 min03Optics: images, interference and diffraction
NEB Class 12 Optics tests ray optics for mirrors and lenses, optical instruments, and wave optics including Young's double slit, diffraction and polarization. Expect sign-convention numericals, fringe-width calculations and conceptual comparisons between interference and diffraction.
313 words, about 2 min04Electricity and Magnetism: fields, circuits and induction
NEB Class 12 Electricity and Magnetism covers electrostatics, capacitors, DC circuits, magnetic fields, electromagnetic induction and alternating current. Questions range from Coulomb-force and capacitor calculations to Kirchhoff loops, force on a conductor, induced emf and RMS values.
296 words, about 1 min05Modern Physics: quanta, atoms and matter waves
NEB Class 12 Modern Physics focuses on the photoelectric effect, photon energy, Bohr's hydrogen model, atomic spectra and de Broglie waves. Expect calculations of photon energy, stopping potential, energy levels and wavelengths, plus explanations of quantization.
305 words, about 2 min06Nuclear Physics and Electronics: decay, devices and logic
NEB Class 12 Nuclear Physics and Electronics covers radioactive decay, half-life, nuclear reactions and mass defect, then semiconductors, diodes, transistors and logic gates. Numerical work includes activity after a time and energy from mass defect; electronics questions test biasing and truth tables.
286 words, about 1 min