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A-LevelPhysicsWaves9702/12 · Oct/Nov 2016 · Q231 Mark

High-frequency sound waves with frequency 2.0 MHz travel with a speed of 2.0 km s⁻¹ through a liquid. What is the shortest distance between a compression and a rarefaction (expansion) in the liquid?

A0.5 mm

B1.0 mm

C5.0 mm

D10.0 mm

✓ Correct answer

A: 0.5 mm

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About this question

Topic: Waves, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2016 Paper 1 Variant 2, question 23.

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