The Oxford physics interview is perhaps the most misunderstood component of the entire admissions process. Having sat through them—and having coached dozens of students through the same experience—I can tell you that the rumours of their difficulty are greatly exaggerated. What they actually test is something far more interesting than factual recall: they test how you think.
What the Interviewers Are Really Looking For
Oxford physics interviews are not designed to catch you out. The interviewers—usually two of them, sitting across a desk or table—are academics who teach physics for a living. What they want to understand is whether you would thrive in the Oxford tutorial system, where a student works through problems with a tutor, thinking aloud, making mistakes, and being guided toward understanding.
This means they are not testing what you know. They are testing what you can do with knowledge you already have, when it is applied to a situation you have not encountered before. Can you break down an unfamiliar problem? Can you identify which physical principles are relevant? Can you make reasonable approximations and justify them? Can you follow a line of reasoning to its conclusion—and recognise when something has gone wrong?
The Format: What to Expect
You will typically have two interviews at your chosen college, each lasting around 30 minutes. Each interview usually involves two interviewers. The format is conversational rather than interrogational: they will present a problem, often on paper or on a whiteboard, and ask you to work through it.
You are expected to think aloud. This cannot be overstated. A student who sits in silence for two minutes and then announces the correct answer has given the interviewers almost nothing to assess. A student who narrates their thinking—*“So I think I need to consider the forces acting on this object… the weight acts downward… I’ll resolve components along this axis…”—*is giving them exactly what they need, even if they ultimately make a mistake.
The problems themselves are not designed to require knowledge beyond the A-Level syllabus (or its equivalent). What they require is the ability to apply that knowledge creatively. You might be asked to estimate the number of air molecules in the room, to explain why the sky is blue, or to analyse a circuit you have not seen before. The point is not the answer; it is the journey.
How to Prepare Effectively
Practise thinking aloud. This is the single most important thing you can do. Take past paper questions—PAT questions, A-Level past papers, Physics Olympiad problems—and solve them while narrating every step of your reasoning. If you have a teacher, parent, or friend who can listen, even better. Get comfortable explaining your thought process in real time.
Develop your physical intuition. Oxford physics is not purely mathematical. The interviewers want to see that you understand the physics behind the equations, not just how to manipulate them. Ask yourself, for every problem: what is physically happening here? What would I expect to happen? Does my mathematical answer make physical sense?
Embrace the unfamiliar. Seek out problems that make you uncomfortable. British Physics Olympiad papers, STEP mathematics problems, and university-style problem sheets will stretch your problem-solving in ways that standard exam preparation does not. The goal is not to learn new content but to become fluent in applying what you know to novel situations.
Do mock interviews. There is no substitute for the experience of sitting across from someone who is asking you difficult questions. Mock interviews—whether with a teacher, a tutor, or an Oxford graduate—will help you manage the nerves, practise your communication, and identify the habits that might let you down. Record them if you can. Watching yourself back is uncomfortable but invaluable.
During the Interview: Practical Advice
When you are given a problem, do not rush. Take a moment to understand what is being asked. Ask clarifying questions if the problem is ambiguous—this is encouraged and shows intellectual engagement. Then start working, and narrate as you go.
If you get stuck, say so. “I’m not sure how to approach this part, but I wonder if…” is a perfectly good response. The interviewers will guide you. Being guided is not a failure—it is the entire point of the tutorial system, and showing that you can respond to guidance is itself a positive signal.
If you make a mistake and realise it, acknowledge it and correct yourself. “Wait, that can’t be right—the units don’t work out. Let me go back…” This demonstrates exactly the kind of self-critical thinking that Oxford values. Students who blindly push forward with a wrong answer are far more concerning than those who catch their own errors.
Finally, remember that the interviewers are on your side. They want you to do well. They are not trying to humiliate you or expose your weaknesses. They are trying to find out how you think, and they will give you every opportunity to show them.
The Bigger Picture
The interview is just one component of your application. Your PAT score, your grades, and your personal statement all matter. But the interview is where the admissions tutors get to see the person behind the paper—and for many students, it is the component where preparation makes the greatest difference.
Approach it not as an ordeal to be survived, but as a conversation about a subject you love with people who love it too. That shift in mindset, more than any amount of problem practice, is what will help you perform at your best.