The approximate transfer characteristic for the circuit shown below with an ideal operational amplifier and diode will be

For the circuit shown below, assume that the $$OPAMP$$ is ideal.

Which one of the following is TRUE?

The op-amp shown in the figure has a finite gain $$A = 1000$$ and an infinite input resistance. A step voltage $${V_i} = 1\,\,mV$$ is applied at the input at time $$t = 0$$ as shown. Assuming that the operational amplifier is not saturated, the time constant (in millisecond) of the output voltage $${V_o}$$ is

The saturation voltage of the ideal op-amp shown below is $$ \pm 10\,V.$$ The output voltage $${V_O}$$ of the following circuit in the steady-state is