When pulse applied to op amp voltage goes from -3v to 9 in 0.6 s What is the slew rate of op amp?

The slew rate of an operational amplifier is defined as the maximum rate of change of the output voltage over time. In this case, the voltage changes from -3V to 9V, a total change of 12V, over a time span of 0.6 seconds. The slew rate can be calculated using the formula:

[ \text{Slew Rate} = \frac{\Delta V}{\Delta t} = \frac{12V}{0.6s} = 20 , \text{V/s}. ]

Therefore, the slew rate of the op-amp is 20 V/s.