Class 12 · Physics

Semiconductor Electronics

16 topics — from Material Types & Energy Band Theory through Logic Gates. Expect about 3 questions in NEET — roughly 12 of 720 marks.

Updated 25 Aug 2026 16 topics Physics · Class 12
In short

Semiconductor Electronics is a Class 12 Physics chapter covering 16 topics. Expect about 3 questions in NEET — roughly 12 of 720 marks.

16
Topics
In this chapter
3
Expected questions
≈ 12 of 720 marks
12
Class
Physics
97
Chapters in the syllabus
27 in Physics

Topics covered #

16 topics, in teaching order.

  1. Material Types & Energy Band Theory
  2. Semiconductor Types
  3. P N Junction & Depletion Region Formation
  4. Electrical Conduction in a Semiconductor
  5. Biasing of P N Junction
  6. Application of P N Junction: Solar Cell
  7. Application of P N Junction: Photo Diode
  8. Application of P N Junction: LED
  9. Application of P N Junction: Zener Diode
  10. Half Wave & Full Wave Rectifier
  11. Transistor
  12. Transistor Modes
  13. Transistor Action in Active Mode
  14. Transistor as an Amplifier
  15. Transistor as an Amplifier: Formula & Numericals
  16. Logic Gates

Weightage #

Expect about 3 questions in NEET — roughly 12 of 720 marks.

3 of 180 questions · 12 of 720 marks
This chapter's share of the paper. Weightage is indicative — it reflects how many questions have typically come from here, not a guarantee for any single year.

Practise this chapter #

Reading it once is not the same as being able to answer it under time.

Practice questionsChapter-wise MCQs with solutions Video lecturesTopic-by-topic walkthroughs Chapter testExam-format, timed NEET previous-year questionsPast questions from this chapter AIIMS previous-year questionsOlder AIIMS papers, same syllabus

Next in Physics

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Frequently asked #

How many questions come from Semiconductor Electronics in NEET?
About 3 questions — roughly 12 of the 720 marks available. It is a Class 12 Physics chapter.
What topics does this chapter cover?
16 topics — from Material Types & Energy Band Theory through Logic Gates. The full list is above.
Where can I practise Semiconductor Electronics?
Chapter-wise MCQs, video lectures, a timed chapter test, and both NEET and AIIMS previous-year questions — all linked above.