The frequency of an input-signal is 50 Hz. The frequencies of an output signal for a half wave rectifier and a full wave rectifier will be respectively:

50 Hz, 100 Hz

The correct answer is Option (3) → 50 Hz, 100 Hz

A half wave rectifier allow current to pass through only during one-half cycle of the input signal.

∴ Output frequency = Input frequency = 50 Hz

for full wave rectifier,

Output frequency = 2 × Input frequency = 100 Hz