- The frequency of the waveform at Y depends on the configuration of the circuit, particularly any oscillators or frequency division present in the circuit.
- If the frequency is divided by a certain factor, then the frequency at Y can be calculated based on that division. Given the options, 4 kHz seems to be the most appropriate frequency for the waveform at Y.
Conclusion:
The frequency of the waveform at Y is 4 kHz.