To compute the peak output amplitude when the voltage gain versus frequency curve of a 741C op-amp is flat up to 25 Hz, we need to consider the slew rate limitations, as they typically influence how quickly the op-amp can change its output. The slew rate and the frequency response both affect the maximum amplitude at a given frequency.
In this case, for the 741C op-amp, the voltage gain is flat up to 25 Hz. This means that the amplifier can operate at this frequency without any significant reduction in gain. Given the slew rate of the op-amp, we can calculate the peak output voltage that would result in distortion-free operation.
Since the exact calculation depends on more specific details (such as input signal amplitude and the characteristics of the frequency response), based on general op-amp knowledge and typical characteristics for 741C:
The peak output amplitude that would typically result when the voltage gain is flat up to 25 Hz is:
(b) 9Vpeak.
This is an estimate based on common values seen in similar scenarios.