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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level PHYSICS 9702/35 Paper 3 Advanced…
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level PHYSICS 9702/35 Paper 3 Advanced Practical Skills 1 May/June 2012 CONFIDENTIAL INSTRUCTIONS * 7 2 8 9 4 0 5 8 3 7 * Great care should be taken to ensure that any confidential information given does not reach the candidates either directly or indirectly. No access to the Question Paper is permitted in advance of the examination. If you have any problems or queries regarding these Instructions, please contact CIE by e-mail: international@cie.org.uk, by phone: +44 1223 553554, by fax: +44 1223 553558, stating the Centre number, the nature of the query and the syllabus number quoted above. This document consists of 6 printed pages and 2 blank pages. DC (CW/SW) 48459/3 © UCLES 2012 [Turn over 2 Preparing apparatus These instructions detail the apparatus required for the experiments in the Question Paper. It is essential that absolute confidentiality is maintained in advance of the examination: the contents of these instructions must not be revealed either directly or indirectly to candidates. No access is permitted to the Question Paper in advance of the examination. If you have problems or queries regarding these instructions, please contact CIE: by e-mail: international@cie.org.uk, or by telephone: +44 1223 553554, or by fax: +44 1223 553558, stating the nature of the query and quoting the syllabus and paper numbers (9702/35). It is assumed that the ordinary apparatus of a Physics laboratory will be available. Number of sets of apparatus The number of sets of apparatus provided for each experiment should be 12 N, where N is the number of candidates taking the examination. There should, in addition, be a few spare sets of apparatus available in case problems arise during the examination. Organisation of the examination Candidates should be allowed access to the apparatus for each experiment for one hour only. After spending one hour on one experiment, candidates should change over to the other experiment. The order in which a candidate attempts the two experiments is immaterial. Assistance to Candidates Candidates should be informed that, if they find themselves in real difficulty, they may ask the Supervisor for practical assistance, but that the extent of this assistance will be reported to the Examiner, who may make a deduction of marks. Assistance should only be given: when it is asked for by a candidate, or as directed in the Notes sections of these instructions, or where apparatus is seen to have developed a fault. Assistance should be restricted to enabling candidates to make observations and measurements. Observations and measurements must not be made for candidates, and no help should be given with data analysis or evaluation. All assistance given to candidates must be reported on the Supervisor’s Report Form. Faulty apparatus In cases of faulty apparatus (not arising from a candidate’s mishandling) that prevent the required measurements being taken, the Supervisor may allow extra time to give the candidate a fair opportunity to perform the experiment as if the fault had not been present. The candidate should use a spare copy of the Question Paper when the fault has been rectified or when working with a second set of apparatus. Supervisor’s Report The Supervisor should complete the Supervisor’s Report Form on pages 7 and 8 and enclose it in the envelope containing the answers of the candidates. If more than one envelope is used, a copy of the report must be enclosed in each envelope. © UCLES 2012 9702/35/CI/M/J/12 3 Question 1 Apparatus requirements (per set of apparatus unless otherwise specified) 1.5 V cell in a holder with terminals. Digital ammeter with a range of at least 0 – 200 mA reading to 0.1 mA or better. A multimeter may be used, fixed at this range and with unused terminals covered. Voltmeter, analogue or digital with a scale of either 0 – 2 V or 0 – 5 V. Switch. Eight connecting leads. Crocodile clip. Nine 47 Ω resistors. See Notes 1, 2 and 3. Two component holders. See Note 3. Notes 1 The resistors should have a minimum power rating of 0.25 W and a tolerance of 5% (e.g. RS Components 386-525), and tape should be used to hide the value of their resistance. 2 Seven of the resistors should be connected in series, as shown in Fig. 1.1. terminal terminal Fig. 1.1 It must be possible to connect a crocodile clip to the terminals at the ends of the chain of resistors and to the junctions between the resistors. 3 Two resistors should be held in component holders. 4 The apparatus should be laid out on the bench. If it is to be used by another candidate, then any circuit should be disassembled and the components restored to their original state. Information required by Examiners Sample set of numerical results, clearly labelled “Supervisor’s Results” and obtained out of sight of the candidates. © UCLES 2012 9702/35/CI/M/J/12 [Turn over 4 Question 2 Apparatus requirements (per set of apparatus unless otherwise specified) Stand with boss and clamp. Expendable spring with an outside diameter approximately 15 mm, coiled length approximately 20 mm and spring constant approximately 25 N m–1 (e.g. Philip Harris product code B8G87194). Rubber band of approximate circumference 20 cm and approximate cross section 1.3 mm × 5 mm. Stopwatch reading to 0.1 s or better. 60 g mass of modelling clay (e.g. Plasticine). 100 g slotted mass. Metre rule with a millimetre scale. See Note 1. Triangular prism with minimum height 1 cm and minimum length 3 cm. Stiff wire of approximate diameter 1 mm and length 20 cm. See Note 2. Notes 1 If the metre rule has two scales, one scale should be covered. 2 The wire should be shaped into a hanger resembling that shown in Fig. 2.1 and should be able to accommodate and support the 100 g slotted mass. 10 cm Fig. 2.1 3 The apparatus should be laid out on the bench. If it is to be used by another candidate, then it should be restored to its original state. Each candidate should be provided with a new quantity of modelling clay. Information required by Examiners Sample set of numerical results, clearly labelled “Supervisor’s Results” and obtained out of sight of the candidates. © UCLES 2012 9702/35/CI/M/J/12 5 BLANK PAGE © UCLES 2012 9702/35/CI/M/J/12 [Turn over 6 BLANK PAGE Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. © UCLES 2012 9702/35/CI/M/J/12 7 9702/35 This form should be completed and sent to the Examiner with the scripts. SUPERVISOR’S REPORT FORM General Certificate of Education Advanced Subsidiary Level and Advanced Level May/June Session 2012 The Supervisor’s Report should give full details of: (a) any help given to a candidate (including the nature of the help given and the name and candidate number of the candidate); (b) any cases of faulty apparatus (including the nature of the problem, the action taken to rectify it, any additional time allowed, and the name and candidate number of the candidate); (c) any accidents that occurred during the examination; (d) any other difficulties experienced by candidates, or any other information that is likely to assist the Examiner, especially if this information cannot be discovered in the scripts. Cases of individual hardship, such as illness, bereavement or disability, should be reported direct to CIE on the normal Special Consideration form. Information required by Examiners For each question, please enclose a sample set of numerical results, obtained out of sight of the candidates and clearly labelled “Supervisor’s Results”. Supervisor’s Report  © UCLES 2012 9702/35/CI/M/J/12 [Turn over 8 Supervisor’s Report (continued) Declaration (to be signed by the Supervisor) The preparation of this practical examination has been carried out so as to maintain fully the security of the examination. Signed ......................................................... Name ........................................................... Centre Number ............................................ Name of Centre .......................................................................................................................................  © UCLES 2012 9702/35/CI/M/J/12
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