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AS and A level PHYSICS A and PHYSICS B (Advancing Physics) Level of response resource
AS Level Physics A
H156/02 Depth in Physics
Sample Question Paper
Question 7(a)
AS and A level PHYSICS A and PHYSICS B (Advancing Physics) Level of response resource
AS and A level PHYSICS A and PHYSICS B (Advancing Physics) Level of response resource
Candidate response 1
AS and A level PHYSICS A and PHYSICS B (Advancing Physics) Level of response resource
Candidate response 2
AS and A level PHYSICS A and PHYSICS B (Advancing Physics) Level of response resource
Commentary and marks
Candidate response 1. Level 3, 6 marks
Commentary
This response shows a clear and logical line of reasoning. The answer is structured in terms of experimental design → measurements → processing of results, and it is clear how to determine a value for the Planck constant using a graphical method. The response is clearly in level 3.
In the ‘Experiment’ section (E), the student has made an attempt at E1 and E3 but does not fully explain the potential divider arrangement. He has gained E2, E4, E5 and E6 so this is definitely a level 3 response. However, to ensure full marks, the student should talk about adjusting the potential divider to zero voltage and then increasing the voltage.
In the ‘Processing’ section (P), the student has gained P1 and P2 (via the graph), P5 and P6. This is a high level 3 response.
Overall, this response would just score the full 6 marks.
Candidate response 2. Level 2, 4 marks
Commentary
There is some structure to the response and it has a line of reasoning, but the links are not always clearly made. For example, ‘This is the minimum voltage, threshold frequency’ is too vague a statement, and ‘The wavelength value is provided, so no need to calculate it’ misses the point that 1/λ does need to be calculated in order to be able to plot the graph. In order to reach the top level, the student would need to add more experimental detail and structure the first part of the answer more carefully.
In the ‘Experiment’ section (E), the student has included E2, E5 and an attempt at E3 (‘Vary the voltage until the light starts to show’). In the ‘Processing’ section (P), he has included P1, P2, P5 and P6.
Three points from E and at least 2 from P puts this answer in level 2. It is high in the level 2 band (4 marks), but does not quite reach level 3 because the student has not included E4. To improve the answer, therefore, the student should mention repeating several times and finding an average value for Vmin each time.
Version 1 1 © OCR 2016
Useful information for OCR A Level Physics’ teachers
Contact with the OCR science team
[email protected] Practical Endorsement queries, comments or ideas for practical activities
[email protected] – the existing (and continuing) address for general queries
twitter @OCR_science OCR Community http://www.ocr.org.uk/community/ see updates from the science
team, collaborate with your colleagues and discuss education and assessments. Available from the open access qualification webpages Physics A http://ocr.org.uk/qualifications/as‐a‐level‐gce‐physics‐a‐h156‐h556‐from‐2015/ Physics B http://www.ocr.org.uk/qualifications/as‐a‐level‐gce‐physics‐b‐advancing‐physics‐h157‐h557‐from‐2015/
Full AS and A Level Specifications Qualification summary brochure Full set of AS and A Level Sample Assessment Materials (SAMs) The Scheme of Work Builder Delivery Guides Topic Exploration Packs and Transition Guides Lesson Elements Candidate exemplars (Level of Response exam questions with commentary)coming
soon Practice MCQs coming soon Links to OCR-endorsed textbooks.
Available from Interchange – password protected https://interchange.ocr.org.uk/
A full set of AS practice papers and mark schemes for Physics A and Physics B Suggested activities for each of the 12 Practical Activity Groups (PAGs) The Practical Endorsement PAG Tracker spreadsheet Physics Practical Skills Handbook Physics Maths Skills Handbook Scheme of Work support document.
Other useful OCR webpages http://www.ocr.org.uk/qualifications/by-subject/science/ The science homepage, with links to all our science qualifications, team info, newsletters, videos and more, plus a link to www.ocr.org.uk/positiveaboutpractical with videos and links explaining aspects of the Practical Endorsement. http://www.ocr.org.uk/ocr-for/teachers/ Contains links to useful information including free, termly, teacher networks (to see listings and book yourself in http://www.ocr.org.uk/ocr-for/teachers/teacher-networks/). Training www.cpdhub.ocr.org.uk Upcoming face to face courses and online webinars plus resources from CPD sessions which have previously run.
