3x (max) 30 min interviews, 1 day apart
2 interviews focussed on maths problems, 1 focussed on physics; asked in one interview about method of tackling difficult problems
Talk through past paper (or MAT/BMO) problems
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Try to combat nerves; realise that Oxbridge isn't everything.
Remember this advice isn't official. There is no guarantee it will reflect your experience because university applications can change between years. Check the official Cambridge and Oxford websites for more accurate information on this year's application format and the required tests.
Also, someone else's experience may not reflect your own. Most interviews are more like conversations than tests and like, any conversation, they are quite interactive.
Test taken:
Number of interviews: 3
Skype interview: No
Time between each interview: 1 day
Length of interviews: less than 30 minutes each
The interviews were all were all on technical subject questions, apart from one question at the begining of the third interview, which asked how I tackle difficult topics, etc. It was split into one mathematics interview and two physics interviews. Typically we covered two or three questions which were explained to me verbally before I attempted them on the paper provided.
In the first mathematics interview I felt as though I had to be helped along aquite a lot but I never got completely stuck, more of that to follow. We attempted a graph sketching question and a longer question that I don't think I can describe at all without giving away. On the whole I thought it was alright but definitely not an 'Oxford' standard interview given the help I needed.
The second two interviews were a mess, I felt constantly on the back foot and really struggled to think clearly. Both the interviews were built around a simple bit of physics emerging from a problem that was completely new to me. It's hard to say how much of this came from my own head but I was a bit taken a back by the
I did quite a few, but not all, of the past papers available online. Online past past papers for the
If you can get your school/college to run a
I completely underestimated how nervous I would be in the interviews. I don't know how I could have better combated my nerves but I would certainly try and prepare yourself for them somehow. Maybe planning to do something in Oxford, even if it is a just walk round the city, to clear your head somewhat would be worth more than some last minute cramming. With the content of the interviews I think I could have been a lot less prepared in terms of subject knowledge and a lot more prepared mentally (although possibly the best way to feel mentally prepared is to know the subject matter, that's up to you to figure out). Having said that I got an offer having thought that 2/3 interviews were a complete disaster so my main advice would be not to assume that what feels like a failed interview from your point of view actually is.
Having said that I think the interviewers must be able to look past those nerves for the qualities they really want. If you're interested in the problems and with their help are able to follow the arguments they're putting forward, you will hopefully be succesful.
The other advice I would give is that 3/4 of my interviewers didn't go to Oxbridge so it really isn't everything. Getting in is a measure, albeit a competent one, of how someone else perceives your potential at a young age. It's much better to focus on achievements you have some control over. Try to be the best physicist you can; don't try to get into the best university.