A band pass filter is one which
- A. Attenuates frequencies between two designated cut off frequencies and passes all other frequencies
- B. Passes all frequencies
- C. Attenuates all frequencies
- D. Passes frequencies between two designated cut off frequencies
Answer: D. Passes frequencies between two designated cut off frequencies
Explanation: A band-pass filter passes signals within a specified frequency band between lower and upper cutoff frequencies (fL to fH) and attenuates signals outside this band.