A-LevelPhysicsSuperpositionMay/June 2013Paper 1 Q271 Mark
A transmitter of electromagnetic waves is placed 45 cm from a reflective surface. [Figure showing a transmitter and a reflective surface 45 cm apart] The emitted waves have a frequency of 1.00 GHz. A stationary wave is produced with a node at the transmitter and a node at the surface. How many antinodes are in the space between the transmitter and the surface?
A1
B2
C3
D4
✓ Correct Answer
The correct answer is C. 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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