Edexcel IGCSE Physics 3 26p Oscilloscope and Microphone Questions
Practise converting a microphone signal into an oscilloscope trace and reading amplitude, period or time from screen settings.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- identify the microphone as the transducer connected to detect the sound wave
- multiply screen divisions by timebase or gain to find period or signal amplitude
- adjust timebase or vertical gain to control the cycles and height shown on screen
Edexcel IGCSE Physics 3 26p Oscilloscope and Microphone Questions question 1
This question is about sound.
A sound wave has a frequency of 500 Hz .
The diagram shows the screen of an oscilloscope.
The timebase of the oscilloscope is 0.50 ms per square.
Draw the trace on the oscilloscope screen when the sound wave is detected.
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