JEE Main · Physics · Wave Optics
Coinciding Maxima of Two Wavelengths
JEE Main asked Coinciding Maxima of Two Wavelengths 2 times in 2 of the 108 shifts Lumi analysed, in 2023 and 2024. It belongs to Young's Double Slit, in Wave Optics (Physics). The longest wait between two years asking it was 1 year.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 2 of 8
- First asked
- 2023
- last in 2024
- Pattern
- Occasional
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2023 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.
Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 0 in 24 shifts · 2023: 1 in 12 shifts · 2024: 1 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.
Shift by shift
Each square is one analysed shift, in date order. Open a filled one for that paper.
How JEE Main framed it
Numerical value is the usual form. Skill tested: calculation.
- Order of overlapping fringes of two wavelengths
- Least distance where bright fringes of two wavelengths coincide
Difficulty
2 of the 2 questions had a numerical answer.
Every question
All 2 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 4 Apr 2024, Shift 1 · Q59Two wavelengths and are used in Young's double slit experiment. nm and nm. The…MediumNumerical value
- 6 Apr 2023, Shift 2 · Q55A beam of light consisting of two wavelengths 7000 Å and 5500 Å is used to obtain interference pattern in Young's double slit experiment.…MediumNumerical value
Shifts: 6 Apr 2023, Shift 2, 4 Apr 2024, Shift 1.
Same topic
Other ideas in Young's Double Slit
Young's Double Slit has 16 ideas JEE Main has asked; 8 of them came up in more than one question. The 12 most asked are below.
- YDSE Fringe Width14× · 2024
- Resultant Intensity Formula13× · 2025
- Intensity at Fractional Path Differences6× · 2026
- Intensity Ratio from Slit Widths6× · 2025
- Fringe Shift by Thin Slab3× · 2026
- Effect of Medium on Fringes2× · 2026
- Angular Fringe Width2× · 2022
- Intensity Exactly Opposite a Slitonce · 2026
- White Light Interferenceonce · 2025
- Exact Path Difference without Approximationonce · 2024
- Position of nth Maximum and Minimumonce · 2022
- Fringe Visibility and Contrastonce · 2021