Learn

Saturday, 31 October

JEE Main · Physics · Ray Optics and Optical Instruments

Snell's Law Application

JEE Main asked Snell's Law Application 4 times in 4 of the 108 shifts Lumi analysed, in 2020, 2022, 2023 and 2026. It belongs to Refraction and Snell's Law, in Ray Optics and Optical Instruments (Physics). The longest wait between two years asking it was 3 years.

Updated 2026-10-24

Times asked
4
in 4 shifts
Years
4 of 8
First asked
2020
last in 2026
Pattern
Frequent
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2022, 2023 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.10.20’170.08’200’210.03’220.07’230’240’250.11’26

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

  • 20261 of 9
  • 20250 of 8
  • 20240 of 18
  • 20231 of 12
  • 20221 of 24
  • 20210 of 24
  • 20201 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: multi-step.

  • Refraction from direction vectors
  • Pole height from shadow length in water

Difficulty

Easy 0Medium 2Hard 2

2 of the 4 questions had a numerical answer.

Every question

All 4 questions

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

  1. 8 Apr 2026, Shift 2 · Q42Light ray incident along a vector AO→\overrightarrow{AO} (AO→=2i^−3j^)\left(\overrightarrow{AO} = 2\hat{i} - 3\hat{j}\right) emerges out along vector…MediumDiagram basedHas a figure
  2. 6 Apr 2023, Shift 1 · Q52A pole is vertically submerged in swimming pool, such that it gives a length of shadow 2.15 m within water when sunlight is incident at an…HardNumerical value
  3. 27 Jun 2022, Shift 1 · Q47Consider a light ray travelling in air is incident into a medium of refractive index 2n\sqrt{2n} . The incident angle is twice that of…MediumSingle correct
  4. 3 Sep 2020, Shift 1 · Q24An observer can see through a small hole on the side of a jar (radius 15 cm) at a point at height of 15 cm from the bottom (see figure).…HardNumerical valueHas a figure

Shifts: 3 Sep 2020, Shift 1, 27 Jun 2022, Shift 1, 6 Apr 2023, Shift 1, 8 Apr 2026, Shift 2.

Same topic

Other ideas in Refraction and Snell's Law

Refraction and Snell's Law has 18 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