What is the function of a "band-pass filter"?

A) To allow all frequencies to pass

B) To block all frequencies except for a specific range

C) To amplify high frequencies

D) To attenuate low frequencies only

Answer: B) To block all frequencies except for a specific range

Explanation: A band-pass filter allows frequencies within a specified range to pass while attenuating frequencies outside that range, useful for isolating specific signals in various applications.