What is the output frequency of a half wave rectifier compared to the input frequency?

The output frequency of a half wave rectifier is indeed the same as the input frequency because a half wave rectifier allows only one half of the AC waveform to pass through, effectively clipping the other half. This means that for every cycle of the AC input, there is one corresponding cycle of output.

In a half wave rectification process, the negative (or positive, depending on the configuration) half of the input signal is blocked, but the positive (or negative) half is allowed to pass through unaltered. As a result, the frequency of the output waveform remains unchanged while the amplitude is reduced, leading to a pulsed DC output that mirrors the input frequency.

Given this information, the correct answer is that the output frequency is the same as the input frequency.