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

$A$ diode is used as a/an

If in a $p-n$ junction diode, a square input signal of $5 \,V$ to $-5 \,V$ is applied as shown, then the output signal across $R_L$ will be:

What is rectification and rectifier?

$A$ 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.

Which of the following circuits represents a full-wave rectifier?