Q.Draw the frequency response of CE amplifier.

The frequency response curve of a CE amplifier plots voltage gain against frequency and shows a flat middle band. …

[!TLDR]

Gain-vs-frequency curve: rising – flat ($A_m$) – falling, with $f_L$, $f_H$ at $0.707A_m$.

The frequency response of a CE amplifier is drawn with voltage gain on the vertical axis and frequency (usually on a log scale) on the horizontal axis. At low frequencies the coupling capacitors reduce the gain, so the curve is low; in the mid-frequency region the gain is maximum and almost constant at $A_m$; at high frequencies stray and junction capacitances reduce the gain again. The points where the gain has fallen to $0.707\,A_m$ (the −3 dB points) mark the lower cut-off frequency $f_L$ and the upper cut-off frequency $f_H$, and the difference $f_H - f_L$ is the bandwidth. …