There’s something uniquely uncomfortable about preparing for the FRCR Part 1 Physics exam. It’s not that it’s impossible, or even unusually tricky compared to other postgraduate exams. It’s that it feels unfamiliar – like something you’re meant to know but never quite learned.
Unlike the anatomy paper, which most radiology trainees settle into fairly quickly, physics doesn’t feel intuitive. You don’t see these concepts in day-to-day clinical work, and unless you’ve got a physics or engineering background, it often starts out feeling abstract and a bit unforgiving.
That’s probably why a lot of people quietly dread it, and then, sometimes, leave it too late.
Start Earlier Than You Think You Need To
Ask anyone who’s passed, and most will say something like, “I wish I’d started sooner.” Not necessarily because the material is overwhelming but because it takes time to for it all to start making sense.
The candidates who seem calm heading into the exam are usually the ones who started four to six months ahead. If you’re rusty, or if your medical school barely touched physics (as many don’t), it’s worth giving yourself a bit of extra time to get up to speed.
What you don’t want is to be trying to understand attenuation and scatter two weeks out while panic-googling CTDI.
Those early months should be about understanding – not memorising. Make sure you understand how X-rays are made. How they’re absorbed. What affects image quality. You don’t need to know everything yet, but you do need to stop feeling lost.
Don’t Jump into Questions Too Soon
It’s tempting to feel productive by blasting through a question bank from week one. But if you haven’t done the groundwork, those early sessions might just teach you the wrong things. Worse still, you might get lucky with some guesses and think you understand more than you actually do.
It’s better to hold off. Spend time making or reading through clear, basic notes. Use simple resources. Short videos, clear diagrams. Stuff that explains concepts like someone’s actually trying to help you understand – not just throwing information at you without explanation.
Once that starts to feel solid, then questions can be useful. But even then, it’s not about your score. It’s about what each question is telling you. If you get one wrong, pause. Why did you miss it? What did you misunderstand?
That’s the part that actually helps – seeing your own gaps and filling them in.
Building Confidence with FRCR Exam Prep
Most people use FRCR Exam Prep. It’s popular for good reason. The questions are exam-style. The layout’s familiar. It gives you a sense of what to expect.
And it isn’t just for the final stretch – it’s useful right from the point you start consolidating your knowledge.
You can dip into short blocks early on, even while you’re still building your foundation. Then, as your understanding improves, you’ll start to get more value out of each session. By the final few weeks, it becomes essential – not just for practice but for timing, making sure nothing slips through, and spotting weaker areas.
It’s not something to save until the end. Used well, it becomes the thread that ties your revision together.
Some Topics Come Up More Than Others
The FRCR Physics syllabus is broad. But the exam doesn’t cover everything equally.
There’s a definite pattern to what comes up again and again:
- Image quality: resolution, contrast, noise
- CT dose metrics like CTDI and DLP
- Radiation safety principles
- MRI safety (zones, SAR, heating)
- Basic ultrasound physics – how it works, not obscure artefacts
This doesn’t mean the other topics don’t matter, but it does mean these ones are worth spending more time on.
You’re not expected to know every number off by heart, but you do need to get what they actually mean. If you see a higher CTDI, what does that imply? Why would shielding need to be thicker in some situations? That kind of thing.
Don’t Get Lost in Detail You’ll Never Need
Here’s something you only learn the hard way: not everything in your textbook is fair game for the exam.
It’s easy to fall into the trap of thinking you need to know everything about magnetic susceptibility in 3T MRI scanners because you saw it mentioned once. But most of the time, the exam sticks to the fundamentals.
If you understand how a CT scanner generates images, what affects spatial resolution, and how radiation dose is measured and managed – you’ve already covered a big chunk of what matters.
Some textbooks go deep. Really deep. And they’re fine for reference. But don’t feel like you need to memorise them. You don’t.
I remember reading about three chapters on advanced ultrasound Doppler techniques… only to find they never came up in any of the mocks, let alone the real exam.
Understand the Format. Practise the Timing
The exam itself? It’s 120 True/False questions. There’s no negative marking. That’s important – because it means you should always answer everything.
Even if you’re not sure, make a reasonable guess. There’s no penalty.
Time is tight. Less than a minute per question. That doesn’t give you room to hesitate or second-guess. So, you need to practise.
Ideally, sit at least two or three full mocks under timed conditions. Not just for the content, but for the experience. Getting used to the rhythm. Learning to move on when you’re stuck. That’s a skill in itself.
Where People Slip Up
There are a few things that come up again and again – mistakes that cost people the pass:
- Leaving physics revision to the last few weeks
- Ignoring safety topics because they seem easy (they’re common and high-yield)
- Neglecting MRI content because “there aren’t that many questions”
- Spending too long on a single tough question during the exam
- Getting stuck in circles trying to resolve conflicting question bank answers
You don’t need to be perfect. But you do need to stay on track. If a topic seems hard, don’t avoid it – break it down. If a question looks off, look it up once, then move on. Don’t spiral.
People Who Pass Tend to Do These Things
It’s not about being brilliant. It’s about being steady.
Most successful candidates share a few habits:
- They start early
- They build their knowledge before testing it
- They study in short, regular sessions
- They don’t rely on question banks to teach them
- They reflect on what they got wrong
- They aim for clarity, not perfection
One candidate told me, “If I could explain a concept to my non-radiology friend without getting stuck, I knew I was probably ready to answer a question on it.”
That stuck with me. And honestly, it worked.
How to Structure Your Time
You don’t need a minute-by-minute revision plan. But a rough structure helps.
First 6-8 weeks:
Build understanding. Use short notes. Watch tutorials. Study 4-5 times a week, even for 30-45 minutes at a time. Avoid question banks for now.
Next 6-8 weeks:
Start introducing questions. Work in small blocks. Track what you get wrong. Make a short list of topics to revisit every week.
Final month:
Focus on speed and coverage. Aim to do 100-150 questions a week. Sit full mock exams. Use your review notes to reinforce key points.
The last week shouldn’t be crammed. Just review, rest, and keep things ticking over.
Final Thoughts
The FRCR Physics exam doesn’t reward panic or perfectionism. It rewards steady, structured work over time, the kind that builds real understanding, not just short-term memory.
It’s not an impossible exam. In fact, it’s fairly predictable once you get going. And somewhere along the way, the concepts that once felt completely foreign start to click. Maybe not all at once. But enough that you stop feeling lost.
The key is starting early. Not so you can cram in more, but so you’re not always racing the clock. You need time to let the basics make sense before you start answering questions on them.
Let things sink in. And when it starts to feel overwhelming – as it probably will at some point – step back. You’re not trying to master every detail of medical physics. You’re trying to pass a focused exam.
Thank you to the joint editorial team of FRCR Exam Prep for this ‘Exam Tips’ post.
