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A-LevelPhysicsWaves9702/12 · Feb/Mar 2020 · Q231 Mark

A sound wave is displayed on the screen of a cathode-ray oscilloscope, as shown. [Figure showing a CRO display of a sinusoidal wave] The time-base setting is 0.50 ms per division. What is the frequency of the sound wave?

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A500 Hz

B670 Hz

C1000 Hz

D1300 Hz

✓ Correct answer

B: 670 Hz

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About this question

Topic: Waves, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Feb/Mar 2020 Paper 1 Variant 2, question 23.

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