Physics · Oct / Nov 2022 · Paper 11 · Question 35
The sound wave produced by a note is displayed on the screen of a cathode-ray oscilloscope. The time-base is set at 5 ms for one division. What is the frequency of the note?
- A20 Hz
- B50 Hz
- C60 Hz
- D150 Hz
As printed in the paper
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Correct answer: B. 50 Hz
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