A 2 kHz square wave is passed through a high-pass filter that has cutoff frequen

Question

A 2 kHz square wave is passed through a high-pass filter that has cutoff frequency of 1,200 Hz. Which of the following statements correctly describes the probable output waveform?

A. The square wave will have rounded edges, with the amplitude slightly reduced.

B. The waveform will have severely rounded rising edges, with the amplitude slightly reduced.

C. The square wave will be mostly unaffected because the cutoff frequency is above the square   wave frequency.

D. The rising edges will be sharp, while the top falls off exponentially after the edge.

Explanation / Answer

When ever we feed a high pass filter with square wave the output of the High pass filter is impulse or step response with raising sgaps edges and falls exponentially. The falling constant depends on the RC constant of the filter.

so option D is the answer.

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