In a full-wave rectifier,the output is:

Statement-$I$: To get a steady $DC$ output from the pulsating voltage received from a full wave rectifier,we can connect a capacitor across the output parallel to the load $R_L$.
Statement-$II$: To get a steady $DC$ output from the pulsating voltage received from a full wave rectifier,we can connect an inductor in series with $R_L$.
In the light of the above statements,choose the most appropriate answer from the options given below:

For the given circuit shown in the figure,to act as a full-wave rectifier: $a.c.$ input should be connected across .............. and .................,and the $d.c.$ output would appear across ............. and ..................

An alternating voltage of $141.4\,V$ (rms) is applied to a vacuum diode as shown in the figure. The maximum potential difference across the condenser will be......$V$

In half wave rectification,if the input frequency is $60\,Hz$,then the output frequency would be $\dots\dots\dots\,Hz$.

The $P-N$ junction diode acts as a rectifier in the circuit shown below. An alternating current source is connected to the circuit. The current in the resistor $(R)$ can be observed as follows. Which of the following is correct?