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Physics

Semiconductor Electronics

A Physics chapter of the NEET syllabus, and how to practise it for the computer-based exam.

Exam rules change between cycles. Confirm dates, syllabus and pattern against NTA's official site. We are not NTA.

Weightage: what the paper actually did

Semiconductor Electronics carried 5 questions in the NEET 2026 paper. One paper is a data point, not a destiny: NTA moves weight between chapters every cycle, which is why the weightage tables deserve care. The stable facts are the paper's shape: 180 questions, 720 marks, +4 right, −1 wrong.

Sample PYQs from this chapter

Real questions NTA asked from Semiconductor Electronics, with the answer and the working. Try before you peek.

Question 1 · NEET 2020

The increase in the width of the depletion region in a p-n junction diode is due to :
  1. A.reverse bias only
  2. B.both forward bias and reverse bias
  3. C.increase in forward current
  4. D.forward bias only
Answer and explanation

Answer: A

The width of the depletion region increases under reverse bias, as the applied voltage enhances the electric field and repels more majority carriers away from the junction. Chapter: Semiconductor Electronics.

Question 2 · NEET 2020

For transistor action, which of the following statements is correct?
  1. A.Base, emitter and collector regions should have same size.
  2. B.Both emitter junction as well as the collector junction are forward biased.
  3. C.The base region must be very thin and lightly doped.
  4. D.Base, emitter and collector regions should have same doping concentrations.
Answer and explanation

Answer: C

For transistor action, the base region must be very thin and lightly doped to ensure that most of the charge carriers injected from the emitter reach the collector. Chapter: Semiconductor Electronics.

How to practise Semiconductor Electronics

Chapter by chapter, against real past-paper questions, on a screen: NEET is computer based from 2027. Read the chapter once, then attempt its PYQs until your accuracy stops climbing, and let the wrong answers tell you which lines to reread. If the chapter keeps refusing to stick, that has its own guide. There is also a free NEET mini mock with answers.

Nearby Physics chapters

Questions

How many questions did Semiconductor Electronics have in NEET 2026?

Semiconductor Electronics carried 5 questions in the NEET 2026 paper. Weightage shifts between cycles, so treat it as a probability, not a promise.

Where can I practise Semiconductor Electronics PYQs for NEET?

Explore available chapter-wise NEET practice in BrainIt, free until the 2027 exam. Review explanations and track chapter accuracy to guide your revision. Sample questions from this chapter are on this page.

Is Semiconductor Electronics important for NEET 2027?

It is part of the Physics syllabus the paper draws from, and NEET 2027 is computer based, so practise it on a screen. Your own accuracy in the chapter matters more than any weightage table: a heavy chapter you already score well on needs less time than a light one you keep missing.

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