Mathematics - Complex Number
Practise 6 IAT (IISER) previous year questions on Complex Number, compiled from papers spanning 2018 to 2026. 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.
Complex Number has been asked in 5 of the 9 years of IAT (IISER) papers analysed (2017–2026), with 6 questions in all. 0% of them were easy, 50% moderate and 50% tough. Most of its questions came from 2026, with 1 question that year. In the last three years (2023–2026) it had 2 questions across 3 papers, about 0.7 per paper.
The chapter's 4 topics are not weighted equally: Conjugate, modulus and argument (2 questions, 33%), nth roots of unity (2 questions, 33%), and Cube Root of Unity (1 question, 17%) have been asked the most. Conjugate, modulus and argument has also led over the last five years, with 1 question. Conjugate, modulus and argument has produced the most tough questions (1).
- 1Consider the following sets of points in the complex plane and . Which of the following statements is TRUE?2026nth roots of unity
- 2Let , and be complex numbers satisfying the following conditions What is the value of ?2025Conjugate, modulus and argument
- 3Consider the following subset of the -plane: Which one of the following statements is Correct ?2024Algebra of complex numbers
- 4Let be a complex root of the quadratic polynomial . The value of is2022Cube Root of Unity
- 5Let be the roots of the equation , for . Then, the sum equals to2019nth roots of unity
- 6Let \(z\) be a given complex number with modulus \(|z| 1\). Then the set \( \{ {z-w}{1- {z} w}:|w|=1, w {C} \}\) is a2018Conjugate, modulus and argument
Frequently Asked Questions
1.How many questions are available for Complex Number?
This chapter includes 6 questions compiled from IAT (IISER) papers spanning 2018 to 2026.
2.Are these questions only from IAT (IISER), or from other exams too?
These are IAT (IISER) questions specifically for the Complex Number chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Complex Number an important chapter for IAT (IISER) Mathematics?
Complex Number has appeared in 6 of the 10 years of IAT (IISER) papers covered here, with 6 questions across 6 papers - about one per paper it appears in.
4.What is the difficulty level of Complex Number questions in IAT (IISER)?
Of the 6 questions analysed for this chapter, 0% are easy, 50% moderate and 50% tough. 2026 had the most, with 1 question.
5.Which topics in Complex Number should I focus on?
These topics have carried the most weightage in Complex Number:
- Conjugate, modulus and argument - 2 questions (33%)
- nth roots of unity - 2 questions (33%)
- Cube Root of Unity - 1 question (17%)
- Conjugate, modulus and argument has produced the most tough questions (1).
6.Is Complex Number's weightage in IAT (IISER) going up or down?
Across all 6 papers analysed, Complex Number has averaged about 1.0 questions per paper. In the last three years (2023–2026), that average has fallen, at about 0.7 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.