Physics · Oct / Nov 2021 · Paper 11 · Question 36
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?
- A170 Hz
- B330 Hz
- C1700 Hz
- D3300 Hz
As printed in the paper
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Correct answer: C. 1700 Hz
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