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Edexcel A level Physics Paper 2 (New Spec) - 21st June watch

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    Paper was sweet as hell imo - lots of waves, materials and radioactivity. I suspect they're saving the hard stuff for paper 3.

    Post your answers and we can compare/compile an unofficial markscheme.
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    was the astronomical distance question c, How to find distance not using standard candles or using standard candles?
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    (Original post by DrNippleson)
    was the astronomical distance question c, How to find distance not using standard candles or using standard candles?
    I think it was how to find it using standard candles
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    (Original post by Hiling99)
    I think it was how to find it using standard candles
    I think it was how not to
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    What do you think the grade for A* would be?
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    was it just me, or was question 19 b i out by a factor of 10? i got 2.4x10¹⁷ consistently where it wanted ≈3x10¹⁸
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    (Original post by vuquach99)
    I think it was how not to
    Oh well, if that's the case then I got it wrong.
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    I thought the last two questions were quite challenging... didn't get enough time to do them
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    I thought standard candles was the last thing to measure distances to I left it
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    (Original post by Unnamed User)
    I thought the last two questions were quite challenging... didn't get enough time to do them
    Agreed, neither did I
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    (Original post by Duckington)
    was it just me, or was question 19 b i out by a factor of 10? i got 2.4x10¹⁷ consistently where it wanted ≈3x10¹⁸
    Yeah I got 0.01 instead of the 0.001 the said in the statement.

    For the angle question I got 10.84.
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    can anyone remember what their answer was for the efficiency of the Geiger-Muller counter?
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    (Original post by Heathliz)
    Agreed, neither did I
    SAME here
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    (Original post by Hiling99)
    can anyone remember what their answer was for the efficiency of the Geiger-Muller counter?
    I got 70. Sth
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    (Original post by tracyvo)
    I got 70. Sth
    wasn't 70... the lenses question?
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    (Original post by Hiling99)
    can anyone remember what their answer was for the efficiency of the Geiger-Muller counter?
    I Got 14.7% but I'm pretty sure that's wrong
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    The GM tube was about 0.84% I think, the cornea was 70.3% of the eye's power, angle was 10.8, roughly 13 day orbital period for the black holes, and the change in length of the arm was 0.005 times the diameter of the proton (so same order of magnitude as 0.001, but 5x larger)
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    ^^
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    (Original post by suzy4444)
    I Got 14.7% but I'm pretty sure that's wrong
    it sounds better than my answer, I got 0.84%
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    (Original post by Xepheria_)
    The GM tube was about 0.84% I think, the cornea was 70.3% of the eye's power, angle was 10.8, roughly 13 day orbital period for the black holes, and the change in length of the arm was 0.005 times the diameter of the proton (so same order of magnitude as 0.001, but 5x larger)
    How did you work out the power of the cornea?
 
 
 
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