A full wave rectifier is used to convert alternating voltage to d.c. voltage. If the input frequency is \( 50\ \mathrm{Hz} \), the output frequency would be
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → \( 100\ \mathrm{Hz} \)
A full wave rectifier uses both half cycles of the input. Each half cycle gives one output pulse in the same direction, so there are two pulses per input cycle:
\( f_{\mathrm{out}} = 2f_{\mathrm{in}} = 2\times50\,\mathrm{Hz} = 100\,\mathrm{Hz} \)
Note: This question is from NCERT (2026-27). NTA sets numerical questions from NCERT too, so do not ignore NCERT while practising numericals.
NCERT (2026-27):
Exercises – …
