The frequency response curve of an RC coupled amplifier is shown in the figure. The bandwidth of the amplifier will be:
A. f₃ - f₂
B. f₄ - f₁
C. (f₄ - f₂)/2
D. f₃ - f₁

To determine the bandwidth of an RC-coupled amplifier from its frequency response curve, you need to understand the key points on the curve. Typically, the bandwidth of an amplifier is defined as the range of frequencies over which the gain drops by a certain amount, often -3 dB (decibels) from its maximum or peak value.

In the given options:

{f_1} represents the lower cutoff frequency, where the gain starts to decrease.
{f_2} represents the frequency at which the gain is 3 dB below its peak value.
{f_3} represents the upper cutoff frequency, where the gain has dropped by 3 dB from its peak value.
{f_4} represents some frequency above {f_3}, which is not directly related to the bandwidth.
The correct option for the bandwidth of the amplifier is "A. {f_3} - {f_2}."

So, the bandwidth of the amplifier is given by the difference between the upper cutoff frequency {f_3} and the lower cutoff frequency {f_2}.