A-LevelPhysicsSuperpositionMay/June 2018Paper 1 Q241 Mark
A string is fixed at one end and the other end is attached to a vibrator. The frequency of the vibrator is slowly increased from zero. A series of stationary waves is formed. Assume that for a stationary wave there is a node at point P. [Diagram] What are the first five wavelengths of the stationary waves that could be formed?
A2L/1, 2L/2, 2L/3, 2L/4, 2L/5
B2L/2, 2L/3, 2L/4, 2L/5, 2L/6
C4L/1, 4L/2, 4L/3, 4L/4, 4L/5
D4L/1, 4L/3, 4L/5, 4L/7, 4L/9
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The correct answer is A. This question tests the candidate's understanding of superposition within the Physicssyllabus. The examiner's mark scheme requires...
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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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