The output form of a full wave rectifier is

In a rectifier circuit,the filter circuit:

$A$ full-wave rectifier circuit along with the input and output voltage waveforms is shown in the figure. The contribution to the output voltage from diode $2$ is:

If a full wave rectifier circuit is operating from $50 \,Hz$ mains, the fundamental frequency in the ripple will be (in $\,Hz$)

Select the correct statement.

$A$ diode detector is used to detect an amplitude modulated wave of $60\%$ modulation by using a condenser of capacity $250\, pF$ in parallel with a load resistance $100\, k\Omega$. Find the maximum modulated frequency which could be detected by it.