Physics (AS & A Level) · May / June 2021 · Paper 11 · Question 4
A signal of frequency 25 Hz is displayed on the screen of a cathode-ray oscilloscope. What is the time-base setting?
- A10 ms cm⁻¹
- B20 ms cm⁻¹
- C25 ms cm⁻¹
- D40 ms cm⁻¹
As printed in the paper
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Correct answer: B. 20 ms cm⁻¹
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