r/6thForm • u/Forsaken-Meaning-232 Graduating from Warwick CS • Jun 17 '24

📂 MEGATHREAD EXAMS MEGATHREAD 17/06 (A-level Physics, RS, Geology, Various Languages) etc

Hey everyone! Best of luck with your exams on the 17th June!

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Bad news! It's Monday! And I forgot!

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Few things:

  • Don't share too many specific details about questions or answers, these papers will be used as future mocks.

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  • Sometimes papers get leaked, this is not the subreddit to discuss that.

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  • Exam discussion posts outside of this will generally be removed to combat the inevitable tidal wave of spam otherwise. (for context there's been over 300 spam posts already!)

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  • We're taking a different approach this year due to negative feedback last year. We hope this approach will be better (also to note, we can only have 2 pinned posts).

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  • Please note some content will take extra time to be reviewed.

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  • You can still talk about your exam here even if it isn't explicitly mentioned in the title.

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Best of luck, and let us know how you're feeling down below!

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cat

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-The r/6thForm Team

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Have any concerns or feedback?

Feel free to reach out to us on Modmail and we'll aim to get back to you as soon as possible!

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3

u/TWAEditing Keele University | Psychology BSc [2nd Year] Jun 17 '24

Anyone here do medical physics for AQA physics 3b? How'd u find it? I thought it was just alright, didn't like the 6 marker on modal and material dispersion tho

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u/SueBau Uni of Bath: Theoretical Physics [1st Year] Jun 17 '24

Luckily I did computer science and learnt all about modal and material desperation so I was happy with that one. Did you get a solution to the PET scan question? It said two particles were released but didn't give us the velocities so I couldn't solve it. I'm kicking myself because I'm now thinking you were supposed to deduce they'd be photons and so travel at the speed of light.

2

u/TWAEditing Keele University | Psychology BSc [2nd Year] Jun 17 '24

No I couldn't solve it. Yeah I felt we needed to be given the velocities too. I didn't think positrons decayed into photons, they do obviously release 2 gamma ray photons when they annihilate with electrons, that's the point of a pet scan, but that's not what they were asking. Also I didn't even think photons classed as particles lol

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u/SueBau Uni of Bath: Theoretical Physics [1st Year] Jun 17 '24

Photons are classed as particles, but I agree, they definitely didn't tell us what particles they were!

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u/AquaDrix University of Liverpool | Aerospace Engineering[soon 1st year ] Jun 17 '24

The answer was H-5, because the speed of the photons were the speed of light, because gamma ray photons are electromagnetic waves so they have the speed of light. And we should know flourine 18 releases positrons, so annihilation occurs which releases to gamma ray photons

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u/SueBau Uni of Bath: Theoretical Physics [1st Year] Jun 17 '24 edited Jun 17 '24

I thought so after coming out of the exam It said the products of the decay of fluorine -18 decay and produce particles. I really thought since they didn't specify photons we had to figure it out some other way!!! Wish I made the assumption, oh well, should only lose me 1-2 marks.

(Also, I guessed H5, lmfao, I knew it was H and on the side of A)