Q. The $PN$ junction diode is used as
A) An amplifier
B) A rectifier
C) An oscillator
D) A modulator
Explanation
(b) It is used to convert $ac$ into $dc$ (rectifier)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.