9702_w12_qp_53.pdf | Test (Assessment) | Kilogram

  This document consists of 8  printed pages. DC (AC/SW) 43679/3 © UCLES 2012 [Turn over UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONSGeneral Certificate of Education Advanced Level * 3 8 31 6174 5 6* PHYSICS   9702/53 Paper 5 Planning, Analysis and Evaluation October/November 2012   1 hour 15 minutes Candidates answer on the Question Paper.No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in.Write in dark blue or black pen.You may use a soft pencil for any diagrams, graphs or rough working.Do not use staples, paper clips, highlighters, glue or correction fluid.DO NOT  WRITE IN ANY BARCODES.Answer all  questions.You may lose marks if you do not show your working or if you do not use appropriate units.At the end of the examination, fasten all your work securely together.The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use12Total   w  w  w  . X   t  r  e  m  e  P  a   p  e  r  s  . c  o  m    2  © UCLES 20129702/53/O/N/12 For Examiner’s Use  1 Two identical light sources are viewed from a distance, as shown in Fig 1.1. When the angle θ   between the light sources is large, they are seen as separate.   observerlight sourcelight source Fig 1.1  (not to scale)   The sources are moved closer together. At a particular angle θ  1  the two sources appear as a single source.   It is suggested that θ  1  is directly proportional to the wavelength λ   of the light from the sources.   Design a laboratory experiment using two light sources to test the relationship between θ  1  and λ  . You should draw a diagram, on page 3, showing the arrangement of your equipment. In your account you should pay particular attention to (a) the procedure to be followed,  (b) the measurements to be taken,  (c) the control of variables,  (d) the analysis of the data,  (e) the safety precautions to be taken. [15]  3  © UCLES 2012 [Turn over 9702/53/O/N/12 For Examiner’s Use  Diagram 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For Examiner’s Use Defining the problemMethods ofdata collectionMethod of analysisSafety considerationsAdditional detail For Examiner’s Use