A-LevelPhysicsSuperposition9702/12 · May/June 2017 · Q271 Mark

Which row describes the oscillations of two moving particles in a stationary wave that are separated by a distance of half a wavelength? [Table with columns: phase difference, amplitude. Rows for A, B, C, D show different values.]

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Aphase difference: 90°, amplitude: different

Bphase difference: 90°, amplitude: same

Cphase difference: 180°, amplitude: different

Dphase difference: 180°, amplitude: same

✓ Correct answer

D: phase difference: 180°, amplitude: same

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Topic: Superposition, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2017 Paper 1 Variant 2, question 27.

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