INPhO 2025, Registration Link, Syllabus, Exam Date, Stages

INPhO 2025: Every year the INPhO (Indian National Physics Olympiad) which is the second stage of the International Physics Olympiad is conducted by the Homi Baba Science Education Centre (HBSEC). The INPhO 2025 is a national-level examination that will be held at about 18 centers in the nation.

As per the trend, the INPhO 2025 is scheduled to be held on 02nd February 2025 (09:00 am to 12:00 pm) and the INPhO Registration Process has been started at https://secure.hbcse.tifr.res.in.

INPhO Syllabus 2025

INPhO 2025

INPhO Previous Year Question Paper

INPhO Exam Benefits & Perks

• Exposure to Advanced Concepts: The INPHO Syllabus includes subjects that are more advanced than what students learn in school. This preliminary exposure can help students prepare for JEE and other exams.
• Preparation for the International Physics Olympiad: INPHO is the second stage of the five-stages Indian Physics Olympiad program and leads to the selection for the International Physics Competition.
• Awards and Recognition: Students who join INPHO can receive awards and recognition. Improving educational performance: INPHO helps improve the performance of physics education standards.
• Practice, Revision and Academic Syllabus: Olympiad exams help students develop the habit of regular practice and revision, and help them connect with the Academic Syllabus.

INPhO 2025 Overview

INPhO 2025 Registration

INPhO Registration 2025 Link

INPhO 2025 Eligibility Criteria

• The student pool of each NSEP will be divided into two groups:
• Group A: Students who are in Class XII as of November 30, 2024
• Group B: Students who are in Class XI or X as of November 30, 2024

INPhO 2025 Exam Date

INPhO 2025 Exam Pattern

INPhO 2025 Syllabus

1. Mechanics

• Establishment of the Kinematics of a point mass.

• Newton's Laws and Inertial systems.

• Closed and Open systems Momentum and Energy, Power work.

• Conservation of Energy, Impulse, Conservation of Linear Momentum.

• Elastic forces, The law of Gravitation, Frictional Forces,

• Potential Energy, Work in a Gravitational Field, Centripetal Acceleration, Kepler's Laws.

2. Mechanics of Rigid Bodies

• Statics, Torque, Centre of Mass.

• The motion of rigid bodies, Translation, Angular velocity, Rotation, Angular Acceleration, and Conservation of Angular Momentum.

• Identification of motion of a rigid body around the fixed axis, Kinetic energy of a rotating body, Moment of inertia, External and Internal Forces.

• Accelerated reference systems and inertial forces.

3. Hydromechanics

• No particular questions will be asked from this topic but students should know the elementary concepts of pressure, the continuity law, and buoyancy.

4. Thermodynamics and Molecular Physics

• Internal energy, First and Second laws of Thermodynamics, Work and Heat.

• Model of a perfect gas, Pressure and molecular kinetic energy, Formulation of state of a perfect gas, Avogadro's number, Absolute Temperature.

• The accomplishment of work by an expanding gas limited to isothermal and adiabatic processes.

• The Carnot cycle, Reversible and Irreversible processes, Thermodynamics Efficiency, Entropy (statistical approach), and Boltzmann factor.

5. Oscillations and Waves

• Harmonic oscillations and the equation of Harmonic Oscillation.

• Harmonic waves, Transverse and Longitudinal Waves, Propagation of waves, Linear polarization, Sound waves, The Classical Doppler effect.

• Superposition of harmonic waves, Interference, Coherent waves, Standing waves, Beats

6. Electric Charge and Electric Field

• Conservation of charge, Coulomb's law

• Electric field, Gauss' Law, Potential

• Dielectric constant and energy density of the electric field, Capacitors, and Capacitance, etc.

7. Current and Magnetic Field

• Ohm's law, Internal resistance of source, Kirchhoff's laws, Joule's law, Work Current Resistance, Work and power of direct and alternating currents.

• The magnetic field of a current, Lorentz force, Current in a magnetic field.

• Ampere's law

• Law of electromagnetic induction, Lenz's law, Magnetic Flux, Self-induction, Energy Density of Magnetic field, Inductance, Permeability.

• Voltage and Current (series and parallel) Resonances, Resistors, Inductors and Capacitors in AC circuits, Alternating current.

8. Electromagnetic Waves

• Generation by feedback and resonance, Frequency of Oscillations, Oscillatory circuit.

• Wave optics, Diffraction grating, Diffraction from one and two slits, Bragg reflection, Resolving power of a grating.

• Line spectra of gases, and Dispersion and Diffraction spectra

• Electromagnetic waves as transverse waves, Polarizers, Polarization by reflection.

• Resolving Power of Imaging Systems. Black body and Stefan-Boltzmann’s law.

9. Quantum Physics

• The impulse of the Photon, and Photoelectric effect and energy

• De Broglie Wavelength and Heisenberg's uncertainty principle.

10. Relativity

• Principle of Relativity, Relativistic Doppler effect, Addition of velocities.

• Energy, Momentum, Relation between energy and mass, Conservation of energy and Momentum, Relativistic identification of motion.

• Simple applications of the Bragg equation.

• Energy levels of atoms and molecules (qualitatively),  Absorption, Spectrum of hydrogen-like atoms emission.

• Alpha- Beta-Gamma-Decomposition, half-life, and exponential decay, Absorption of radiation, Components of nuclei, Nuclear reactions, Mass defect, Energy levels of nuclei (qualitatively).

Olympiad Wallah Telegram Channel

INPhO Result 2025