PHYSICS EXAMINATION – 2014 Bruce Walsh Chief Assessor

REMINDERS  Study design and textbooks  Examiners report  VASS system  SSMS  On line marking

GENERAL ADVICE  Mark allocation  Writing implements  Multiple attempts  Logical set out of working

GENERAL ADVICE  Explanations must address specific question. Writing everything can lead to contradictions. Dot points good. Diagrams and formulae can help.  Show working  Use unit in answer box

GENERAL ADVICE  Show numbers substituted into formulae  Formulae (including derived) must be correct  Calculators – sci mode, no truncation  Rounding

GENERAL ADVICE  Answers as simplified decimals  Significant figures  Vectors  Realistic answers  Scales on axes AAAA

SPECIFIC CONCERNS  Connected bodies  Energy conversion and conservation  More complex projectile motion  Apparent weightlessness  Modulation  Explaining direction of induced current

SPECIFIC CONCERNS  Operation of transformers in transmission system  Series circuits  Explaining aspects of photoelectric effect  Path difference in interference  Electron and X-ray diffraction patterns

SPECIFIC CONCERNS  Electron energy level diagrams and associated emissions and absorptions  Wave nature of matter and electron energy levels

(Nov) 2012 (June) Students Mean 55%54%60%63% Median 57%54%62%66% Std deviation 23%24%22%23% STATISTICS

STATISTICS

SCALING % GRADE Jun 2012 Nov A A B B C C D D E E54119

Average mark 1b) 49%

2

2b) 20%

2c) 34%, 2d) 13%

3b) 51%

4b) 40%

5a) 59%

9) 30%

12a) 51%

13a) 32%

13c) 37%

14a) 29%

15d) 45%

16) 42%

18a) 35%, 18b) 53%

19a) 59%, 19b) 46%

20b) 26%

21b) 55%, 21c) 35%

21d) 31%

22

22a) 41%, 22b) 40%

23b) 35%

PROBLEM AREAS DETAILED STUDIES DETAILED STUDYDIFFICULT QUESTIONS (<60% correct) Relativity1,3,4,6,7,9,10,11 Mat & Struct5,6,7,8,10 Electronics1,3,4,7,9,10,11 Synchrotron5,7,10 Photonics1,2,3,5,7,8,9,10,11 Sound3,8