NEET UG 2025 · Physics · Question 40
NEET 2025 Physics, question 40
Question 40 of the NEET 2025 paper (code 45) is a Physics question from Semiconductor Electronics: Materials, Devices and Simple Circuits. Its idea, Rectifiers and Filters, was asked 3 times, in 2022, 2023 and 2025, across NEET 2017–2026. The NTA final answer key gives options 1 and 2 (the key accepted both).
Updated 2026-10-08
Q40 · Physics
A full wave rectifier circuit with diodes () and () is shown in the figure. If input supply voltage volt, then at = 15 msec
The figure, described in words
Centre-tap full wave rectifier: transformer secondary ends to diodes D1 (top) and D2 (bottom), load R_L from diode junction to centre tap.
- 1 is forward biased, is reverse biasedOfficial answer
- 2 is reverse biased, is forward biasedOfficial answer
- 3 and both are forward biased
- 4 and both are reverse biased
Official answer: options 1 and 2 · NTA final answer keyThe key accepted more than one option for this question.
Same idea
Rectifiers and Filters, in other papers
NEET asked this idea 3 times, in 2022, 2023 and 2025. The other 2 questions below.
- 2023 Q5A full wave rectifier circuit consists of two p-n junction diodes, a centre-tapped transformer, capacitor and a load resistance. Which of…One-line MCQ · Easy
- 2022 Q1In half wave rectification, if the input frequency is 60 Hz, then the output frequency would be :One-line MCQ · Easy
Rectifiers and Filters: every question and how it was framed
The chapter
Semiconductor Electronics: Materials, Devices and Simple Circuits in ten years of NEET
27 questions from 2017–2026, asked in 10 of 10 papers, about 2.6 a paper. Semiconductor Devices alone had 17.