A-LevelPhysicsSuperposition9702/12 · May/June 2013 · 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?

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✓ Correct answer

C: 3

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Topic: Superposition, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2013 Paper 1 Variant 2, question 27.

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