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Physics · 2009 · November · Paper 3 · HL · Question paper

PhysicsQuestion paper2009HLNovember

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This question paper is listed under Physics in the 2009 examination archive. Its catalogue level is HL. The catalogue session is November. The information below helps you identify the document before opening the complete PDF. Subject, year and session labels come from the archive catalogue; the original cover remains the reference if a label differs. A file is not automatically suitable for your current syllabus simply because its subject name matches.

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8809-6503 36 pages N09/4/PHYSI/HP3/ENG/TZ0/XX+ Tuesday 17 November 2009 (morning) Physics higher level Pa Per 3 INSTRUCTIONS TO CANDIDATES • Write your session number in the boxes above. • Do not open this examination paper until instructed to do so. • Answer all of the questions from two of the Options in the spaces provided. • At the end of the examination, indicate the letters of the Options answered in the candidate box on your cover sheet. 1 hour 15 minutes [Personal identifier removed] © International Baccalaureate Organization 2009 0136 88096503 8809-6503 – 2 – N09/4/PHYSI/HP3/ENG/TZ0/XX+ Option E — Astrophysics E1. This question is about the star Becrux and Cepheid variables. ( a) Describe what is meant by (i) the apparent magnitude scale. .................................................................. .................................................................. .................................................................. .................................................................. [2] (ii) absolute magnitude. .................................................................. .................................................................. [1] ( b) Becrux is a main sequence star and is one of the stars that make up the Southern Cross. The following data are available for Becrux. Apparent magnitude = 1.25 Absolute magnitude = –3.92 Apparent brightness = 7.00 ×10–12 bSun bSun is the apparent brightness of the Sun. Use the data to deduce that the ( i) distance of Becrux from Earth is 108 pc. .................................................................. .................................................................. .................................................................. .................................................................. .................................................................. [3] ( ii) luminosity of Becrux is 3.43 ×103 LSun where LSun is the luminosity of the Sun. (1 pc = 2.05 ×105 AU) .................................................................. .................................................................. ..................................................................
File information
Subject
Physics
Document type
Question paper
Year
2009
Session
November
Level
HL
Paper
3
Examination zone
Not labelled in the archive
Language
Not labelled in the archive
File size
1.1 MB
Pages
36
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