In a full wave rectifier, the frequency of the input signal is 60 Hz. What will be the frequency of the output of the rectifier?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 120 Hz
A full wave rectifier uses both half cycles of the input: the negative half cycle is turned into a positive one, so the output has two pulses for every input cycle.
\( \displaystyle f_{\mathrm{out}} = 2f_{\mathrm{in}} = 2\times60\,\mathrm{Hz} \)
\( \displaystyle f_{\mathrm{out}} = 120\,\mathrm{Hz} \)
Note: A similar question was also asked in CUET (UG) 2025 on 29-05-2025 (Slot 1).
Note: NTA picked this question from an NCERT (2026-27) exercise and changed the figures. Do not ignore NCERT while practising numericals.
NCERT (2026-27):
Exercises – …
