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AQA Physics PHYA5 - Thursday 18th June 2015 [Exam Discussion Thread] Watch

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    (Original post by sam_97)
    It really is hard to tell, but I'd say:

    PHYA4 - Around 60 A*
    PHYA5 - Around 56 A*

    I can't see the grade boundaries changing dramatically
    Just praying for 270 UMS overall.


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    (Original post by CD223)
    Just praying for 270 UMS overall.


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    I'm the same mate, ideally I need about 120 UMS in the exam today.
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    (Original post by you-only-live-once)
    yes same, original paper! how did u find it?
    What did you get for the image distance for the lens question?

    Also did you get myopia and draw a diverging lens?
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    (Original post by DCMed96)
    Anyone done the medical physics paper? I was given the original paper, not the R paper.. Is it same for everyone??

    The original paper has ECG for the six marker
    Same for me as well
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    what was the answer for why the count of the gamma source drops when moved just a little bit further?
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    (Original post by Christina30)
    It was a good paper, how did you find it?
    Same here, couple of tough questions but overall a nice paper.
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    (Original post by jf1994)
    What did you get for the image distance for the lens question?

    Also did you get myopia and draw a diverging lens?
    yes myopia and diverging lens. distance i got 0.19m i think
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    (Original post by PoojaRathod)
    Urgh lost them marks then 😂😭
    Don't beat yourself up about it, everyone loses marks.
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    (Original post by _jess)
    what was the answer for why the count of the gamma source drops when moved just a little bit further?
    I wrote that it was an inverse square law
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    (Original post by sophiebeth100)
    Same here, couple of tough questions but overall a nice paper.
    what do you think the grade boundary will be ?
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    For the six marker did we have to calculate the speed of rotation of the binary system or its recessive velocity relative to Earth? I wasn't sure so did both
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    (Original post by _jess)
    what was the answer for why the count of the gamma source drops when moved just a little bit further?
    I said gamma rays follows the inverse square law, what did u put
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    (Original post by you-only-live-once)
    yes myopia and diverging lens. distance i got 0.19m i think
    Wouldn't the image distance be greater than the object distance since it was a diverging lens? The object distance was 0.25m I think
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    (Original post by bwr19)
    I would imagine so. Seems a bit cruel if those marks would become off limits if you got the tickbox part wrong.

    They gave the power of the star so I just rearranged Stefan's Law.
    I did that too but I I just messed up typing it in my calculator. So annoyed.
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    Would I still be correct if instead of assuming that the difference between rest mass of neutron and proton is negligible but actually used the specific values of 1.673... And 1.675...?
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    (Original post by k9000)
    I just said measure distance from earth to sun and then divide by time taken for light to reach earth? although that seems too simple but then again it was one mark. And good, i really liked that 6 marker
    I thought it might be something with measuring the time taken for light to travel from the sun to the earth, but I wasn't sure, so I decided to leave it and come back at the end (seeing as it was only 1 mark) but I didn't get back to it
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    of course, yeah i didnt put anything
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    What was the very first one? Alpha, and what was the range?
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    (Original post by sam_97)
    I'm the same mate, ideally I need about 120 UMS in the exam today.
    I'll be gutted if the boundaries go up substantially.


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    i put alpha, didnt have a clue about the range
 
 
 
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