A-LevelPhysicsSuperpositionFeb/Mar 2016Paper 1 Q241 Mark
The diagram represents the pattern of stationary waves formed by the superposition of sound waves from a loudspeaker and their reflection from a metal sheet (not shown). [Figure 24.1] W, X, Y and Z are four points on the line through the centre of these waves. Which statement about these stationary waves is correct?
AAn antinode is formed at the surface of the metal sheet.
Bnode is a quarter of a wavelength from an adjacent antinode.
CThe oscillations at X are in phase with those at Y.
DThe air particles oscillate perpendicular to the line WZ.
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of superposition within the Physicssyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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