JEE Main · Physics · Semiconductor Electronics: Materials, Devices and Simple Circuits
Photodiode Reverse Bias Rationale
JEE Main asked Photodiode Reverse Bias Rationale 2 times in 2 of the 108 shifts Lumi analysed, in 2021 and 2022. It belongs to Semiconductor Diodes, in Semiconductor Electronics: Materials, Devices and Simple Circuits (Physics). The longest wait between two years asking it was 1 year.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 2 of 8
- First asked
- 2021
- last in 2022
- Pattern
- Occasional
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2021 and 2022. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.
Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.
Shift by shift
Each square is one analysed shift, in date order. Open a filled one for that paper.
How JEE Main framed it
Single correct is the usual form. Skill tested: calculation.
- Why photodiode is reverse biased
- Band gap from threshold wavelength of photodiode
Difficulty
Every question was multiple choice.
Every question
All 2 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 25 Jun 2022, Shift 1 · Q47The photodiode is used to detect the optical signals. These diodes are preferably operated in reverse biased mode because :EasySingle correct
- 22 Jul 2021, Shift 2 · Q18Consider a situation in which reverse biased current of a particular P-N junction increases when it is exposed to a light of wavelength…EasySingle correct
Shifts: 22 Jul 2021, Shift 2, 25 Jun 2022, Shift 1.
Same topic
Other ideas in Semiconductor Diodes
Semiconductor Diodes has 17 ideas JEE Main has asked; 10 of them came up in more than one question. The 12 most asked are below.
- Zener Diode Regulation15× · 2025
- Ideal vs. Practical Diode Circuit Analysis12× · 2026
- Forward and Reverse Biasing6× · 2026
- Zener Diode Power Dissipation Limits5× · 2026
- Diode Clipper Circuits3× · 2026
- LED Bandgap and Emission Wavelength3× · 2024
- Optoelectronic Diodes3× · 2024
- Depletion Region Formation2× · 2026
- Solar Cell V-I Characteristics2× · 2022
- I-V Characteristicsonce · 2024
- Piecewise Linear Diode Modelonce · 2024
- Dynamic Resistance Calculationonce · 2022