Answer :
Final answer:
An amplifier's frequency response varies across the spectrum, where it may underperform in the low-frequency range, operate optimally in the mid-band, and overemphasize or inadequately respond to high frequencies. Low-pass and high-pass filters are used to manage the frequency response by allowing certain frequencies to pass while blocking others.
Explanation:
The frequency response of an amplifier refers to its ability to amplify different frequencies by varying amounts, which often results in frequency distortion. The low-frequency range typically involves long wavelengths and is where the response may be more subdued due to the amplifier's inability to handle rapid changes. The mid-band frequency is where the amplifier performs optimally, providing consistent and stable amplification. At the high-frequency end, often involving short wavelengths, the amplifier might either enhance these frequencies or fail to accurately follow rapid changes, depending on its design. Filters are used to control the amplifier's response to various frequencies. A low-pass filter allows frequencies below a certain cutoff to pass through, while a high-pass filter does the opposite. An example of a filter is an LRC circuit, which serves as a bandpass filter by allowing a specific range of frequencies to pass through, based on the resonant frequency.
