9702_w15_ir_33 | Test (Assessment)

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Physic A Level 9702 w15
  This document consists of 7  printed pages and 1  blank page. DC (AC/SG) 99939/2 © UCLES 2015 [Turn over Cambridge International Examinations Cambridge International Advanced Subsidiary and Advanced Level * 824 8 3 7 62 5 9* PHYSICS   9702/33 Paper 3 Advanced Practical Skills 1 October/November 2015 CONFIDENTIAL INSTRUCTIONS 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 Cambridgeby e-mail: info@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.  2 9702/33/CI/O/N/15 © UCLES 2015 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 Cambridge: by e-mail: info@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 (9702/33).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.  3 9702/33/CI/O/N/15 © UCLES 2015 [Turn overQuestion 1Apparatus requirements (per set of apparatus unless otherwise specified) Stand of height at least 60 cm.Expendable spring with approximate outside diameter 15 mm, approximate coiled length 20 mm and approximate spring constant 25 N m –1  (e.g. Philip Harris product code B8G87194). See Note 1.String. See Note 1.Wooden rod with approximate dimensions 50 cm × 1.5 cm × 1.5 cm. See Note 2.Small hook with approximate diameter 1 cm. See Note 2.Small triangular prism of approximate height 2 cm to act as a pivot.180° protractor measuring to 1° or better.10 g mass hanger.Six 10 g slotted masses.50 g slotted mass. See Note 3.Metre rule with a millimetre scale.30 cm ruler with a millimetre scale. Notes1 A loop of string of circumference 12 cm should be tied to the spring as shown in Fig. 1.1.springstring Fig. 1.12 The hook should be screwed centrally into the wooden rod at approximately 1 cm from one end of the rod as shown in Fig. 1.2.    1   cmhookwooden rod Fig. 1.2  (not to scale) 3 All the slotted masses must fit on the mass hanger. All masses must have their values clearly labelled.  4 9702/33/CI/O/N/15 © UCLES 2015 4 The apparatus should be laid out on the bench. If it is to be used by a second candidate, then it should be restored to its srcinal state. Information required by Examiners Sample set of numerical results, clearly labelled “Supervisor’s Results” and obtained out of sight of the candidates.
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