If the differential voltage gain and the common mode voltage gain of a differential Amplifier are 48 dB and 2 dB respectively, then it's common mode Rejection Ratio is

If the input to the ideal comparator shown in figure is sinusoidal signal of 8V (peak to peak) without any DC component, then the output of the comparator has a duty cycle of

The circuit shown in figure is best described as a

If the Op-Amp in the figure is ideal, the output voltage V_out will equal to