AQA AS Physics A Unit 2 25/05/12 - PHYA2
Physics exam discussion - share revision tips in preparation for GCSE, A Level and other physics exams and discuss how they went afterwards.
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View Poll Results: Difficulty of exam (120 UMS boundaries)
Very easy (68-70 for 120 UMS) 4 3.74% Easy (64-67 for 120 UMS) 35 32.71% Medium (60-63 for 120 UMS) 53 49.53% Hard (57-59 for 120 UMS) 15 14.02%
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Re: AQA AS Physics A Unit 2 25/05/12 - PHYA2Check out the poll - it's right above you(Original post by Kavzaz)
What do you guys will think be the grade boundaries for this exam? Roughly obviously?
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Re: AQA AS Physics A Unit 2 25/05/12 - PHYA2It may ruin my Physics grade, all because we're doing the ISA correctly. My result is probably a true reflection of my grade, I've got about the same %'s, just a little more in my modules, but both my ISA's are E/D borderline yet are 60 and 66%, it's totally unfair.(Original post by iAre Teh Lejend)
Very well said, I think AQA need to rethink having modules marked internally, or even sat in class rooms. For my ISA, students were literally sitting right next to each other, on the same bench, centimeters away... -
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Re: AQA AS Physics A Unit 2 25/05/12 - PHYA2PHYA2 May 2012.pdf(Original post by Seb Hudson)
Here is a mark scheme for the exam that my friend sent me! I'll be honest and take no credit for this but still, enjoy
Does anyone else disagree with the answers to question 6(a)(ii) on this unofficial mark scheme? It is surely 135 and 315 (or 45) out of phase? -
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Re: AQA AS Physics A Unit 2 25/05/12 - PHYA2Sorry, but the wave is a stationary wave therefore the equation, Phase difference = 2*pi*d/lambda does not apply, instead you should calculate it using the number of nodes between the two points and multiply that by pi.(Original post by kingm)
PHYA2 May 2012.pdf
Does anyone else disagree with the answers to question 6(a)(ii) on this unofficial mark scheme? It is surely 135 and 315 (or 45) out of phase? -
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Re: AQA AS Physics A Unit 2 25/05/12 - PHYA2the question only asked to STATE the phase RELATIONSHIP not CALCULATE the phase DIFFERENCE..the answer to both were "out of phase" and you obtained that answer from calculating the number of nodes in between the two points (m(Pi) ) like you said...no need for an actual number.(Original post by SrijanParmeshwar)
Sorry, but the wave is a stationary wave therefore the equation, Phase difference = 2*pi*d/lambda does not apply, instead you should calculate it using the number of nodes between the two points and multiply that by pi. -
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Re: AQA AS Physics A Unit 2 25/05/12 - PHYA2I agree that they are both out of phase and that if you failed to put that down then you're unlikely to get the marks but if you WERE to calculate the phase difference then it would be 135 and 315 no?(Original post by Amirrryy)
the question only asked to STATE the phase RELATIONSHIP not CALCULATE the phase DIFFERENCE..the answer to both were "out of phase" and you obtained that answer from calculating the number of nodes in between the two points (m(Pi) ) like you said...no need for an actual number.Last edited by kingm; 01-06-2012 at 10:42. -
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Re: AQA AS Physics A Unit 2 25/05/12 - PHYA2yep thats exactly the numbers i put down(Original post by kingm)
I agree that they are both out of phase and that if you failed to put that down then you're unlikely to get the marks but if you WERE to calculate the phase difference then it would be 135 and 315 no?
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Re: AQA AS Physics A Unit 2 25/05/12 - PHYA2Yes, I agree with the fact that you should state the relationship (however I don't agree with your answers), my point was that the wave was a stationary wave and I think that both numerical and non-numerical answers will be accepted.(Original post by Amirrryy)
the question only asked to STATE the phase RELATIONSHIP not CALCULATE the phase DIFFERENCE..the answer to both were "out of phase" and you obtained that answer from calculating the number of nodes in between the two points (m(Pi) ) like you said...no need for an actual number.
No, this was a stationary wave you can only have multiples of pi (in radians) or zero as the phase difference.(Original post by kingm)
I agree that they are both out of phase and that if you failed to put that down then you're unlikely to get the marks but if you WERE to calculate the phase difference then it would be 135 and 315 no? -
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Re: AQA AS Physics A Unit 2 25/05/12 - PHYA2Yeah as well as that, if you take into account that most people are typically conservative about how they found the exam (like, you would more often find people saying its hard, than saying its easy, even if the exam was easy), I think the likely mark for full UMS, judging from the poll, should be 67-68. I think people are probably more reluctant to say an exam was piss easy because you're never going to be sure, whereas if you did badly, you'd know to a higher degree of certainty because of questions you left out, now obviously theres no other mark you could get but zero if you leave out a question.(Original post by cooldudeman)
95 out of thousands of people voted so its not really reliable... -
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Re: AQA AS Physics A Unit 2 25/05/12 - PHYA2^True, however I'm guessing that the majority of people who use tsr will be A/B candidates and many people who did poorly will not want to discuss how they did. Therefore the majority of people looking for a solution will be confident in their performance and will be more likely to vote that the exam was easy.(Original post by internet tough guy)
Yeah as well as that, if you take into account that most people are typically conservative about how they found the exam (like, you would more often find people saying its hard, than saying its easy, even if the exam was easy), I think the likely mark for full UMS, judging from the poll, should be 67-68. I think people are probably more reluctant to say an exam was piss easy because you're never going to be sure, whereas if you did badly, you'd know to a higher degree of certainty because of questions you left out, now obviously theres no other mark you could get but zero if you leave out a question.
Personally, I think the exam was easier than some previous papers and harder than others, because there was a lot that could trip you up easily. The series/parallel springs question (9 Marks), The Phase Relationship Question (2 Marks), The wavelength of the Compression wave Question (1 Mark) etc to name a few. However some of the exam was much easier - The Optics Questions and 6 marker were straight forward, along with the vectors and moments Questions.
Lets just hope AQA are feeling generous,
My gut feeling says 120 UMS will be ~ 62/70 -
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Re: AQA AS Physics A Unit 2 25/05/12 - PHYA2(Original post by internet tough guy)
Yeah as well as that, if you take into account that most people are typically conservative about how they found the exam (like, you would more often find people saying its hard, than saying its easy, even if the exam was easy), I think the likely mark for full UMS, judging from the poll, should be 67-68. I think people are probably more reluctant to say an exam was piss easy because you're never going to be sure, whereas if you did badly, you'd know to a higher degree of certainty because of questions you left out, now obviously theres no other mark you could get but zero if you leave out a question.There are arguments for either way (the poll is an overestimate or underestimate). The poll is the best guess possible that we have...(Original post by Future Engineer)
^True, however I'm guessing that the majority of people who use tsr will be A/B candidates and many people who did poorly will not want to discuss how they did. Therefore the majority of people looking for a solution will be confident in their performance and will be more likely to vote that the exam was easy.
Personally, I think the exam was easier than some previous papers and harder than others, because there was a lot that could trip you up easily. The series/parallel springs question (9 Marks), The Phase Relationship Question (2 Marks), The wavelength of the Compression wave Question (1 Mark) etc to name a few. However some of the exam was much easier - The Optics Questions and 6 marker were straight forward, along with the vectors and moments Questions.
Lets just hope AQA are feeling generous,
My gut feeling says 120 UMS will be ~ 62/70
Edit: have any of you heard of the wisdom of the crowd...Last edited by silentlife; 12-06-2012 at 21:29. -
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Re: AQA AS Physics A Unit 2 25/05/12 - PHYA2hey one question, what do you think 52-53 would be in UMS this time? also do u think it was easier than jan? thanks(Original post by silentlife)
There are arguments for either way (the poll is an overestimate or underestimate). The poll is the best guess possible that we have...
Edit: have any of you heard of the wisdom of the crowd...Last edited by Amirrryy; 18-06-2012 at 19:34. -
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Re: AQA AS Physics A Unit 2 25/05/12 - PHYA2I would put that between 102 and 110, but even that is a very rough estimate. (I could well probably be wrong.) The trouble with this exams is that the papers seem to be more "strange" than "hard" - it all depends on how the rest of the country found the exam and preformed. The region of marks where you put yourself is also one of the most sensitive regions on the UMS scale for this exam - a small increase or decrease will result in a large change in UMS mark.(Original post by Amirrryy)
hey one question, what do you think 52-53 would be in UMS this time? also do u think it was easier than jan? thanks
I would rank this exam ever so slightly easier than the Jan exam, but I'm hoping that other people found it harder.
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Re: AQA AS Physics A Unit 2 25/05/12 - PHYA2thanks!(Original post by silentlife)
I would put that between 102 and 110, but even that is a very rough estimate. (I could well probably be wrong.) The trouble with this exams is that the papers seem to be more "strange" than "hard" - it all depends on how the rest of the country found the exam and preformed. The region of marks where you put yourself is also one of the most sensitive regions on the UMS scale for this exam - a small increase or decrease will result in a large change in UMS mark.
I would rank this exam ever so slightly easier than the Jan exam, but I'm hoping that other people found it harder.
