Physics (AS & A Level) · Oct / Nov 2021 · Paper 12 · Question 4

Four cathode-ray oscilloscope (CRO) screens each display a waveform. The screen and the time-base setting of each CRO is shown. Which screens show waveforms of the same frequency?

1. A1 and 2
2. B1 and 3
3. C1 and 4
4. D2 and 3

As printed in the paper