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Saturday, 31 October

JEE Main · Physics · Ray Optics and Optical Instruments

Critical Angle Between Two Dense Media

JEE Main asked Critical Angle Between Two Dense Media 2 times in 2 of the 108 shifts Lumi analysed, all in 2022. It belongs to Refraction and Snell's Law, in Ray Optics and Optical Instruments (Physics). In 2022 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
2
in 2 shifts
Years
1 of 8
First asked
2022
the only year
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

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

00.050.10’170’200’210.07’220’230’240’250’26

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

  • 20260 of 9
  • 20250 of 8
  • 20240 of 18
  • 20230 of 12
  • 20222 of 24
  • 20210 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: application.

  • Critical angle from speeds in two media
  • Condition for total internal reflection between two media

Difficulty

Easy 1Medium 1Hard 0

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.

  1. 29 Jun 2022, Shift 2 · Q34The speed of light in media ‘AA’ and ‘BB’ are 2.0 × 101010^{10} cm/scm/s and 1.5 × 101010^{10} cm/scm/s respectively. A ray of light enters from…MediumSingle correct
  2. 26 Jul 2022, Shift 2 · Q37Light travels in two media M1M_1 and M2M_2 with speeds 1.5×108 ms−11.5 \times 10^{8}\ ms^{-1} and 2.0×108 ms−12.0 \times 10^{8}\ ms^{-1} respectively. The…EasySingle correct

Shifts: 29 Jun 2022, Shift 2, 26 Jul 2022, 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