JEE Main · Physics · Wave Optics
Effect of Medium on Fringes
JEE Main asked Effect of Medium on Fringes 2 times in 2 of the 108 shifts Lumi analysed, in 2022 and 2026. It belongs to Young's Double Slit, in Wave Optics (Physics). The longest wait between two years asking it was 4 years.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 2 of 8
- First asked
- 2022
- last in 2026
- Pattern
- Occasional
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2022 and 2026. 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: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 1 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
Single correct is the usual form. Skill tested: application.
- Fringe width in different medium
- Fringe width change when immersed in liquid
Difficulty
Every question was multiple choice.
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.
- 5 Apr 2026, Shift 1 · Q39In Young's double slit experiment, the fringe width of the interference pattern produced on the screen is m. If the experiment…EasySingle correct
- 26 Jul 2022, Shift 1 · Q35In Young's double slit experiment, the fringe width is 12 mm. If the entire arrangement is placed in water of refractive index…EasySingle correct
Shifts: 26 Jul 2022, Shift 1, 5 Apr 2026, 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
- Coinciding Maxima of Two Wavelengths2× · 2024
- 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