The input ac voltage applied in a half wave rectifier is V = 300 sin (100πt) volt. The frequency of the output obtained from the rectifier is
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 50 Hz
In a half-wave rectifier the diode conducts only during one half of each input cycle, so the output has one pulse for every input cycle and repeats at the input frequency. Compare the given voltage with \( V = V_0\sin\omega t \).
\( \displaystyle \omega = 2\pi f = 100\pi\,\mathrm{rad\,s^{-1}} \)
\( \displaystyle f = \frac{100\pi}{2\pi} = 50\,\mathrm{Hz} \)
\( f_{\mathrm{out}} = f = 50\,\mathrm{Hz} \)
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 – …
