Statement I : When a Si sample is doped with Boron, it becomes P type and when doped by Arsenic it becomes N-type semiconductor such that P-type has excess holes and N-type has excess electrons. Statement II : When such P-type and N-type semiconductors, are fused to make a junction, a current will not automatically flow which can be detected with an externally connected ammeter. In the light of above statements, choose the most appropriate answer from the options given below

Statement I is correct but statement II is incorrect

Statement I is incorrect but statement II is correct

Both Statement I and statement II are correct

Both Statement I and Statement II are incorrect

The photodiode is used to detect the optical signals. These diodes are preferably operated in reverse-biased mode because:

fractional change in minority carriers produces higher reverse bias current

fractional change in majority carriers produces higher forward bias current

fractional change in majority carriers produces higher reverse bias current

fractional change in minority carriers produces higher forward bias current

For using a multimeter to identify a diode from electrical components, choose the correct statement out of the following about the diode:

It is a two terminal device which conducts current in one direction only.

It is a two terminal device which conducts current in both directions.

It does not conduct current, gives an initial deflection which decays to zero.

It is a three terminal device which conducts current in one direction only between the central terminal and either of the remaining two terminals

Electronic Devices — JEE Main Previous Year Questions

176 solved PYQs · 2016–2026 · Physics

Solved PYQs: 176
Years covered: 2016–2026
Avg / year: ~16
Subject: Physics

How many JEE Main questions come from Electronic Devices?

Electronic Devices has contributed 176 questions to Joint Entrance Examination (Main) papers between 2016 and 2026 — an average of about 16 questions a year. That count is measured from EByAi’s bank of 55,289 JEE Main questions, not estimated from a syllabus. Every one of the 176 questions carries a written, step-by-step solution, and each is tagged to Electronic Devices within Physics, so you can drill this chapter across every year at once instead of hunting through paper PDFs. Practising a chapter’s full PYQ history is the fastest way to learn the patterns examiners reuse.

Sample Electronic Devices questions from real JEE Main papers

These are 5 real questions from the bank — exactly as asked, with the answer one tap away. All 176 Electronic Devices questions (with full written solutions) are available in practice.

Question 1 · JEE Main 2025
Consider the following statements : A. The junction area of solar cell is made very narrow compared to a photo diode. B. Solar cells are not connected with any external bias. C. LED is made of lightly doped p-n junction. D. Increase of forward current results in continuous increase of LED light intensity. E. LEDs have to be connected in forward bias for emission of light. Choose the correct answer from the options given below :
1. (A) $A, C, E Only$
2. (B) $B, E Only$
3. (C) $A, C Only$
4. (D) $B, D, E Only$
Show answerAnswer
$Answer: (B) B, E Only$
Question 2 · JEE Main 2023
Which one of the following statements is not correct in the case of light emitting diodes? A. It is a heavily doped p-n junction. B. It emits light only when it is forward biased. C. It emits light only when it is reverse biased. D. The energy of the light emitted is equal to or slightly less than the energy gap of the semiconductor used. Choose the correct answer from the options given below:
1. (A) $A$
2. (B) $B$
3. (C) $C and D$
4. (D) $C$
Show answerAnswer
$Answer: (D) C$
Question 3 · JEE Main 2023
Statement I : When a Si sample is doped with Boron, it becomes P type and when doped by Arsenic it becomes N-type semiconductor such that P-type has excess holes and N-type has excess electrons. Statement II : When such P-type and N-type semiconductors, are fused to make a junction, a current will not automatically flow which can be detected with an externally connected ammeter. In the light of above statements, choose the most appropriate answer from the options given below
1. (A) $Statement I is incorrect but statement II is correct$
2. (B) $Both Statement I and statement II are correct$
3. (C) $Statement I is correct but statement II is incorrect$
4. (D) $Both Statement I and Statement II are incorrect$
Show answerAnswer
$Answer: (C) Statement I is correct but statement II is incorrect$
Question 4 · JEE Main 2022
The photodiode is used to detect the optical signals. These diodes are preferably operated in reverse-biased mode because:
1. (A) $fractional change in majority carriers produces higher forward bias current$
2. (B) $fractional change in majority carriers produces higher reverse bias current$
3. (C) $fractional change in minority carriers produces higher forward bias current$
4. (D) $fractional change in minority carriers produces higher reverse bias current$
Show answerAnswer
$Answer: (D) fractional change in minority carriers produces higher reverse bias current$
Question 5 · JEE Main 2022
For using a multimeter to identify a diode from electrical components, choose the correct statement out of the following about the diode:
1. (A) $It is a two terminal device which conducts current in both directions.$
2. (B) $It is a two terminal device which conducts current in one direction only.$
3. (C) $It does not conduct current, gives an initial deflection which decays to zero.$
4. (D) $It is a three terminal device which conducts current in one direction only between the central terminal and either of the remaining two terminals$
Show answerAnswer
$Answer: (B) It is a two terminal device which conducts current in one direction only.$

Electronic Devices questions by year

Year	Questions	Share of chapter questions
2026	21
2025	18
2024	22
2023	22
2022	20
2021	33
2020	17
2019	12
2018	3
2017	2
2016	6

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FAQs

How many JEE Main questions have been asked from Electronic Devices?

EByAi's bank holds 176 real JEE Main questions from Electronic Devices, asked between 2016 and 2026 — about 16 per year on average. Every count is measured from actual papers, not estimated.

Is Electronic Devices important for JEE Main?

176 questions over 11 papers make Electronic Devices a moderate-weightage chapter in JEE Main Physics. The year-wise table above shows exactly how often it appears.

Can I solve Electronic Devices PYQs online for free?

Yes. EByAi lets you solve JEE Main past-year questions in the browser with written solutions — free daily practice, no card needed.

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