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Olympiad
Indian National Physics Olympiad
IOQM 2026 Answer Key

Frequently Asked Questions

The INPhO is a highly competitive exam designed to identify and nurture exceptionally talented pre-university physics students. It's a crucial step towards representing India at the prestigious International Physics Olympiad (IPhO).

Indian citizens born between July 1, 2006, and June 30, 2011, residing and studying in India, and currently in Class X, XI, or XII are eligible.

The INPhO typically consists of 6 theoretical questions, lasting 3 hours. The syllabus covers a wide range of physics topics, from mechanics and thermodynamics to electromagnetism and quantum physics.

NSEP: 22 November 2026 and INPhO: February 2027 (Tentative)

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Indian National Physics Olympiad (INPhO) 2027

Latest Update: INPhO 2027 (Indian National Physics Olympiad) will be held on Sunday, 31 January 2027, from 9:00 AM to 12:00 PM at 17 centres across India. Students qualify through NSEP 2026, held on 22 November 2026.

INPhO is a scholarly Oympiad instituted to sift through India's exceptionally able pre-university students and foster their talents in the science of Physics. Such competitions mark a big stepping stone toward participation at the highest level in this activity at the International Physics Olympiad, IPhO.

The Homi Bhabha Centre for Science Education comes under the Tata Institute of Fundamental Research. It guides INPhO, which is a process of shortlisting the team to appear and represent India in the International Physics Olympiad. At the same time, it allows the students to better learn the material and, in the process, enhance the teaching-learning experience of the concerned teacher.

1.0What is INPhO?

The Indian National Physics Olympiad (INPhO) is the second-stage national physics exam that selects students for India's International Physics Olympiad (IPhO) team. It is conducted by the Homi Bhabha Centre for Science Education (HBCSE), a national centre of the Tata Institute of Fundamental Research (TIFR). Students reach INPhO only by qualifying the National Standard Examination in Physics (NSEP), conducted by the Indian Association of Physics Teachers (IAPT).

The National Olympiad Programme is fully funded by the Government of India through DAE, DST, the Ministry of Education and ISRO. It is free of coaching requirements in the first two stages; HBCSE notes that NSEP and INPhO do not necessarily require specialised coaching outside school.

2.0INPhO 2027: EXAM OVERVIEW

Particular

Details

Exam name

Indian National Physics Olympiad (INPhO) 2027

Conducting body

HBCSE (TIFR), Mumbai

Stage I exam

NSEP 2026, conducted by IAPT

INPhO exam date

31 January 2027 (Sunday)

Timing / duration

9:00 AM – 12:00 PM (3 hours)

Mode

Offline, pen-and-paper, theory

Language

English and Hindi

Centres

17 cities

Fee

No separate INPhO fee; NSEP enrolment fee is Rs 300

Seats (target)

Minimum 400 (200 Group A + 200 Group B)

Next stage

OCSC-Physics at HBCSE (target 40 students)

International event

57th IPhO, July 2027, Saudi Arabia (5 students)

Official website

olympiads.hbcse.tifr.res.in

3.0INPhO 2027 important dates

Event

Date

NSE centre registration (schools)

1 – 20 August 2026

NSEP student enrolment

21 August – 14 September 2026

NSEP 2026 admit card

Expected 1–2 weeks before the exam on iapt.org.in

NSEP 2026 exam

22 November 2026 (Sunday), 8:30 – 10:30 AM

INPhO qualified list

On or before 15 January 2027 (iapt.org.in)

INPhO registration + admit card

After the list, on olympiads.hbcse.tifr.res.in (mandatory)

INPhO 2027 exam

31 January 2027, 9:00 AM – 12:00 PM

OCSC dates announced

By 15 January 2027

IPhO 2027

July 2027, Saudi Arabia

4.0Stages in the INPhO Program

The INPhO Exam typically involves multiple stages.

  • National Standard Examination in Physics (NSEP): This is the first round, a multiple-choice test open to thousands of students nationwide.
  • Indian National Physics Olympiad (INPhO): Those students who qualify through performance in NSEP are nominated to take part in the INPhO, the more challenging theoretical test.
  • Orientation-Cum-Selection Camp, OCSC: The best candidates from the INPhO are called to an orientation-cum-selection camp held at HBCSE. There, they are theoretically and experimentally trained in physics to finalize the teams for India for IPhO.
  • International Physics Olympiad (IPhO): The future select Indian team will participate in an international competition where selected students from all over the world compete.

The INPhO program consists of a very rigorous selection procedure, with an emphasis on building critical thinking and problem-solving and experimental skills. It is a special chance to pursue one's interest in physics and work through challenging scientific principles.

5.0INPhO 2027 eligibility

To appear for NSEP 2026 and move on to INPhO 2027, a student must meet all of these conditions:

  1. Be eligible to hold an Indian passport.
  2. Be born between 1 July 2007 and 30 June 2012 (both days inclusive).
  3. Be residing and studying in India since 30 November 2024 or earlier, or studying in an Indian school system since that date.
  4. Be in Class X, XI or XII at the time of enrolment.
  5. Not have passed, or be scheduled to complete, the Class XII board exam before 30 November 2026.
  6. Not have started, or plan to start, university studies by 1 June 2027.
  7. Not be appearing in NSEJS 2026.

OCI note: As per Madras High Court orders, OCI students cannot be selected for the Indian team at IPhO. They are provisionally eligible for all stages up to and including the OCSC.

6.0Exam Dates

  • NSEP (National Standard Examination in Physics): 22 November 2025 (Tentative)
  • INPhO (Indian National Physics Olympiad): 31 January 2027 (Tentative)

7.0Exam Centers

List of Centers for INPhO Exam

Ahmedabad

Bengaluru

Ranchi

Bhopal

Bhubaneshwar

Chandigarh

Chennai 

Delhi

Guwahati

Hyderabad

Mumbai 

Jaipur

Kochi

Kolkata

Kota 

Lucknow

Nagpur 

Patna

8.0Selection Process

NSEP:

  • Multiple-choice questions (48) with single correct answers.
  • Multiple-choice questions (12) with one or more correct alternatives.

INPhO:

  • Based on NSEP performance, a target of 400 students (200 from Group A (Class XII) and 200 from Group B (Class XI or X)) will be selected for INPhO.
  • Selection criteria include:
    • Minimum Admissible Score (MAS)
    • Merit Index (MI)
    • Proportional Representation Clause (state-wise quota)
    • Minimum Total Number Clause
    • Super-numerary Quota for Female Students
    • Previous International Representation Clause

OCSC (Orientation-Cum-Selection Camp):

  • 40 students will be selected for OCSC based on INPhO performance.
  • OCSC includes theoretical and experimental training.
  • Based on OCSC performance, a team of 5 students will be selected to represent India at the International Physics Olympiad (IPhO).

9.0Exam Pattern for INPhO

Here is the Exam Pattern for the Upcoming INPhO:

Duration of INPhO

3 Hrs

Syllabus

Very Equivalent to senior secondary level (up to and including Class XII) of CBSE India

Language

English & Hindi, Can be Choose During Registration

Number of Questions

6

the

80

10.0Syllabus for INPhO 2027

1. Mechanics

  • Definition of Kinematics for a point mass
  • Newton's Laws and inertial system.
  • closed and open system-Momentum and Energy, work power.
  • Conservation of energy- Impulse, Conservation of linear Momentum.
  • Elastic force-Law of gravitation friction.
  • Potential energy-work done in Gravitational field Centripetal acceleration, Keple's Laws.

2. Mechanics of Rigid Bodies

  • Statics, Torque, Centre of Mass.
  • Translation, angular velocity, and rotation of rigid bodies with their motion. 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.
  • Work accomplished by an expanding gas for processes of isothermal and adiabatic expansion.
  • 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 wave, Linear polarization, Sound wave and 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, Source's Internal resistance, Kirchhoff's Law, Joule's Law. Work with the currents of current and direct AC power.
  • 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 Oscillation, Oscillatory Circuit.
  • Wave optics Diffraction gratings Diffraction by 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.
  • Resolution 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, Doppler shift in special relativity, Composition of Velocities.
  • Energy, Momentum, Relation between energy and mass, Conservation of energy and Momentum, Relativistic identification of motion.
  • Simple applications of the Bragg equation.
  • The energy levels of atoms and molecules are described qualitatively as absorption and emission spectrum of hydrogen-like atoms.
  • Alpha- Beta-Gamma-Decomposition, half-life, and exponential decay, Absorption of radiation, Components of nuclei, Nuclear reactions, Mass defect, Energy levels of nuclei (qualitatively).

11.0Training

Selected students will undergo rigorous training at HBCSE before the IPhO.

  • IPhO(International Physics Olympiad) 2026: To be held in Bucaramanga, Colombia, from July 4th to 12th, 2026.
  • IPhO 2027 will be held in Hungary in the month of July 2027.

Also Explore: International Olympiad of Science

12.0Key features of the Indian National Physics Olympiad

Academic Excellence

  • Fosters Scientific Talent: INPhO seeks to identify and nurture exceptionally talented pre-university students in physics.
  • High-Level Competition: It helps Indian students participate in the highly competitive International Physics Olympiad (IPhO).
  • Long selection procedure including NSEP, INPhO, and an orientation-cum-selection camp focusing on critical thinking, problem-solving, and experimental skills.

Eligibility and Participation

  • Open for Indian Citizens: The applicant students should hold Indian citizenship or a passport.
  • Born between July 1, 2006, and June 30, 2011.
  • Educational Qualifications: Class X, XI, and/or XII studies.

Exam Details

  • NSEP: Stage I, multiple choice test.
  • INPhO: Second stage; a slightly more difficult theoretical exam.
  • Exam Centres: Held across major cities in India.
  • Syllabus: A wide syllabus covering everything in physics - mechanics, thermodynamics, electromagnetism, optics, and quantum physics.

Training and Support

  • OCSC: The selected students would attend an intensive theoretical and experimental course at HBCSE.
  • Mentorship: HBCSE offers mentorship and assistance to students during and after the selection process.

International Representation

IPhO Participation: Top-level students of OCSC get selected to represent India in the International Physics Olympiad.

Olympiad Exams

Class 6 Olympiad

Class 7 Olympiad

Class 8 Olympiad

Class 9 Olympiad

Class 10 Olympiad


Subject-wise Olympiad Exams

Science Olympiad Exam

Social Science Olympiad Exam

English Olympiad Exam

Maths Olympiad Exam


National Olympiads

National Level Science Talent Search Exam

INPhO (Indian National Physics Olympiad) 

INChO (Indian National Chemistry Olympiad)

INAO (Indian National Astronomy Olympiad)

INJSO (Indian National Junior Science Olympiad)

National Science Olympiad

Indian National Mathematical Olympiad

National Standard Examination in Physics

National Standard Examination in Biology

National Standard Examination in Chemistry

National Standard Examination in Junior Science

National Standard Examination in Astronomy


International Olympiads

International Junior Science Olympiad

International Junior Physics Olympiad

International Chemistry Olympiad

International Mathematics Olympiad

International Biology Olympiad

International Computer Science Olympiad