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O-LevelPhysicsWaves5054/11 · Oct/Nov 2021 · Q361 Mark

A microphone detects a musical sound and the signal is fed into an oscilloscope. The diagram shows the trace which appears on the screen. The spot of light on the oscilloscope screen takes 1.2 ms to travel across the screen. What is the frequency of the musical sound?

Diagram for this question, from the exam paper

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A170 Hz
B330 Hz
C1700 Hz
D3300 Hz

✓ Correct answer

C: 1700 Hz

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About this question

Topic
Waves, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source
O-Level Physics, Oct/Nov 2021 Paper 1 Variant 1, question 36.

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