Learn

Saturday, 31 October

JEE Main · Physics · Wave Optics

Intensity Ratio from Slit Widths

JEE Main asked Intensity Ratio from Slit Widths 6 times in 5 of the 108 shifts Lumi analysed, in 2021, 2022, 2024 and 2025. It belongs to Young's Double Slit, in Wave Optics (Physics). The longest wait between two years asking it was 2 years. In 2022 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
6
in 5 shifts
Years
4 of 8
First asked
2021
last in 2025
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2022, 2024 and 2025. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.150.30’170’200.03’210.07’220’230.05’240.25’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 2 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 in 18 shifts · 2025: 2 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.

  • 20260 of 9
  • 202521 of 8
  • 20241 of 18
  • 20230 of 12
  • 20222 of 24
  • 20211 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: calculation.

  • Max to min intensity ratio
  • Ratio of maximum to minimum intensity from slit widths

Difficulty

Easy 4Medium 2Hard 0

Every question was multiple choice.

Every question

All 6 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 3 Apr 2025, Shift 2 · Q41Two monochromatic light beams have intensities in the ratio 1:9. An interference pattern is obtained by these beams. The ratio of the…EasySingle correct
  2. 3 Apr 2025, Shift 2 · Q43Width of one of the two slits in a Young's double slit interference experiment is half of the other slit. The ratio of the maximum to the…MediumSingle correct
  3. 4 Apr 2024, Shift 2 · Q46The width of one of the two slits in a Young's double slit experiment is 4 times that of the other slit. The ratio of the maximum of the…EasySingle correct
  4. 30 Jun 2022, Shift 1 · Q47Find the ratio of maximum intensity to the minimum intensity in the interference pattern if the widths of the two slits in Young's…EasySingle correct
  5. 25 Jun 2022, Shift 2 · Q44The interference pattern is obtained with two coherent light sources of intensity ratio 4:1. And the ratio…MediumSingle correct
  6. 24 Feb 2021, Shift 1 · Q20In a Young’s double slit experiment, the width of the one of the slit is three times the other slit. The amplitude of the light coming…EasySingle correct

Shifts: 24 Feb 2021, Shift 1, 25 Jun 2022, Shift 2, 30 Jun 2022, Shift 1, 4 Apr 2024, Shift 2, 3 Apr 2025, Shift 2.

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.

Topic analysisChapter analysisStudy this chapterAll repeated ideas