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International Physics Realm

The 2024 IPhR Results are out; check IPhR's details and wait for 2025!

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What is IPhR?

IPhR is a competition that tests your knowledge in general physics.

The competition tests six main areas, which are as follows, listed in order of frequency: Classical Mechanics, Electromagnetism, Waves and Oscillations, Thermodynamics, Optics, and Modern Physics. If you want to know more about the topics that will be covered in the competition, please refer to the syllabus.

For detailed competition regulations, please refer to the rules.

The IPhR competition is an individual-based international physics competition for high school students in grades 9-12. It consists of two fast-paced rounds, both of which comprise Multiple Choice Questions (MCQs) only. In the 1st round, participants have to solve 30 MCQs within 45 minutes. In the 2nd round, they have to solve 40 MCQs within the same duration of 45 minutes. All MCQs carry the same weight of 1 point each, and no marks are deducted for incorrect choices.

In the trial round, fill in the gap questions will be tested for IPhR 2024 and might be included further on.

  • The IPhR competition is open to all international high school students. There are no restrictions on which country you come from to participate.
  • Students in school grades 9–12 are eligible to join; if you start grade 9 before the 1st round, but have not enrolled in college before the 2nd round, you are eligible to participate.
  • Grade 9 is the first (freshman) year of high school in some countries and the last (third) year of preparatory school in others, but this distinction does not affect your eligibility. As long as you are in grade 9 (or the equivalent), you can participate in the competition. If you are unsure about your eligibility, feel free to contact us for clarification.

Since a broad range of participants can compete (grades 9–12), the competition is divided into two categories based on grade level:

  1. The Regular Category: grades 9–10
  2. The Advanced category: grades 11–12

The top 0.1-10% of each category become finalists, reach the 2nd round, and receive medals. To learn more about the certificates and awards, please refer to the relevant section.

Before the beginning of the competition, all participants will be offered the chance to participate in a trial round. The trial round mocks the exact same criteria provided in the first round.

IPhR consists of two fast-paced rounds:

Round 1: solving 30 Multiple Choice Questions (MCQs) within 40 minutes
Round 2: solving 40 MCQs within 45 minutes.

Registration for IPhR closes on July 31st, an optional trial round will be offered on August 2nd, 1st round will be on August 8th, 2nd round will be on August 22nd, and the final results will be announced on August 31st.
 
All rounds will take place at 2:00–3:00 PM (GMT+0) on IPhR’s website. Participants must start at 2:00–2:20 PM (GMT+0). Participants may choose to manually submit before the timer runs out or let the form auto-submit by itself.
Why Participate

IPhR competition provides an excellent experience to put your knowledge to the test.

Engage and Share Ideas with Peers Worldwide

The IPhR competition is a great place to meet, engage, and share ideas with peers from all around the world. This is particularly helpful for those pursuing physics-related studies. The competition offers a fun and supportive community with an opportunity to learn and grow.

Compete with Brilliant Minds from Around the Globe​

We offer an excellent opportunity for students to put their knowledge to the test by competing with similar-minded peers globally. You will be challenged with physics problems that will stretch your intellectual capabilities and enhance critical and analytical thinking.

Accredited by STEM Egypt

All participants in the IPhR competition will receive a participation certificate, accredited by STEM High School for Boys - 6th of October. This certificate is an official recognition of your participation in the competition.

Multiple Medals & Awards for Finalists

The IPhR competition rewards top performers with medals based on their placement in the final round. Gold, silver, and bronze medals are given according to a 1:2:3 ratio. Furthermore, top contestants receive awards from our partners, including research software and Olympiad training! This provides a great incentive to push yourself to your limits in the competition.

Help others

Ambassador Program

The Ambassador Program provides an excellent experience to put your leadership skills to the test.

Details
IPhR TOP AMBASSADORS
Example problems

IPhR provides a diverse range of problem sets with varying levels of difficulty that cater to students of all levels.

Check out IPhR Question Archive

Which of the following is a valid measuring unit of linear momentum?

A) kg . m . s
B) kg . m . s^2
C) kg . m . s^{-1}
D) kg . m . s^{-2}

Imagine having a non-uniform magnetic field source near a coil. Which of the following would induce current in the coil?

A) Moving the coil
B) Intensify the magnetic field
C) Moving the magnetic field source
D) All of the previous

What force would you need to pull in a 100 g Yoyo with a 2 meter string in order to make it revolve once per second? Approximate your answer to the nearest decimal. Assume that gravity's effect vanished so that the Yoyo does not fall.

A) 2.0 N
B) 3.9 N
C) 7.9 N
D) 15.8 N

A spring with a spring constant of k = 1000 N/m is connected to an object and is compressed by \Delta x = 0.1 m. The object is let go, falling in a 1 L tank of 25^\circC water and coming to rest. Assuming that the object doesn't lose any energy before falling in the tank, what is the final temperature of the water? (density of water = 1 kg/L, specific heat capacity of water = 4186 J/kg ^\circC)

A) 24.999 ^\circC
B) 25.000 ^\circC
C) 25.001 ^\circC
D) 25.002 ^\circC