Physics - Semiconductors
Practise 5 IAT (IISER) previous year questions on Semiconductors, compiled from papers spanning 2017 to 2023. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty IAT (IISER) tests.
Semiconductors has been asked in 5 of the 9 years of IAT (IISER) papers analysed (2017–2026), with 5 questions in all. 0% of them were easy, 100% moderate and 0% tough. Most of its questions came from 2023, with 1 question that year. In the last three years (2023–2026) it had 1 question across 3 papers, about 0.3 per paper.
The chapter's 3 topics are not weighted equally: Diodes (3 questions, 60%), Logic gates (1 question, 20%), and Semiconductors (1 question, 20%) have been asked the most. Over the last five years the most frequent topics have been Semiconductors (1).
- 1The intrinsic electron and hole concentrations of a Si-based intrinsic semiconductor are and , respectively. Upon doping with trivalent impu2023Semiconductors
- 2A 2-input exclusive OR (XOR) gate with inputs and produces the output . In the Boolean circuit shown below, which values of the inputs and w2021Logic gates
- 3Consider the circuit with a Zener diode whose breakdown voltage . What is the voltage if2020Diodes
- 4For a p-n junction normal diode and a Zener diode, which of the following statements is true?2018Diodes
- 5In the given circuit, the input voltages at P and Q could be either 0 V or 10 V . Use the fact that a diode under forward bias is a short ci2017Diodes
Frequently Asked Questions
1.How many questions are available for Semiconductors?
This chapter includes 5 questions compiled from IAT (IISER) papers spanning 2017 to 2023.
2.Are these questions only from IAT (IISER), or from other exams too?
These are IAT (IISER) questions specifically for the Semiconductors chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Semiconductors an important chapter for IAT (IISER) Physics?
Semiconductors has appeared in 5 of the 10 years of IAT (IISER) papers covered here, with 5 questions across 5 papers - about one per paper it appears in.
4.What is the difficulty level of Semiconductors questions in IAT (IISER)?
Of the 5 questions analysed for this chapter, 0% are easy, 100% moderate and 0% tough. 2023 had the most, with 1 question.
5.Which topics in Semiconductors should I focus on?
These topics have carried the most weightage in Semiconductors:
- Diodes - 3 questions (60%)
- Logic gates - 1 question (20%)
- Semiconductors - 1 question (20%)
6.Is Semiconductors's weightage in IAT (IISER) going up or down?
Across all 5 papers analysed, Semiconductors has averaged about 1.0 questions per paper. In the last three years (2023–2026), that average has fallen, at about 0.3 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.