Physics - Wave Optics
Practise 3 IAT (IISER) previous year questions on Wave Optics, compiled from papers spanning 2019 to 2025. 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.
Wave Optics has been asked in 2 of the 9 years of IAT (IISER) papers analysed (2017–2026), with 3 questions in all. 0% of them were easy, 100% moderate and 0% tough. Most of its questions came from 2021, with 1 question that year. In the last three years (2023–2026) it had 0 questions across 3 papers, about 0 per paper.
The chapter's 3 topics are not weighted equally: Diffraction of Light (1 question, 33%), Interference of Light (1 question, 33%), and Polarization of Light (1 question, 33%) have been asked the most. Over the last five years the most frequent topics have been Polarization of Light (1).
- 1A source produces a light beam of intensity polarized along the -direction. The beam is sent along the -direction. It enters a polaroid with2025Polarization of Light
- 2Consider a Young's double slit experiment with monochromatic light of wavelength 600 nm . The intensity of the light is at a point on the sc2021Interference of Light
- 3An LED display consists of 100 pixels per . Consider that the diameter of the pupil of the eye is 5 mm and the average wavelength of the dis2019Diffraction of Light
Frequently Asked Questions
1.How many questions are available for Wave Optics?
This chapter includes 3 questions compiled from IAT (IISER) papers spanning 2019 to 2025.
2.Are these questions only from IAT (IISER), or from other exams too?
These are IAT (IISER) questions specifically for the Wave Optics chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Wave Optics an important chapter for IAT (IISER) Physics?
Wave Optics has appeared in 3 of the 10 years of IAT (IISER) papers covered here, with 3 questions across 3 papers - about one per paper it appears in.
4.What is the difficulty level of Wave Optics questions in IAT (IISER)?
Of the 3 questions analysed for this chapter, 0% are easy, 100% moderate and 0% tough. 2021 had the most, with 1 question.
5.Which topics in Wave Optics should I focus on?
These topics have carried the most weightage in Wave Optics:
- Diffraction of Light - 1 question (33%)
- Interference of Light - 1 question (33%)
- Polarization of Light - 1 question (33%)
6.Is Wave Optics's weightage in IAT (IISER) going up or down?
Across all 3 papers analysed, Wave Optics has averaged about 1.0 questions per paper. In the last three years (2023–2026), that average has fallen, at about 0.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.