Learn

Saturday, 31 October

JEE Main · Physics · Mechanical Properties of Fluids

Torricelli's Law of Efflux

JEE Main asked Torricelli's Law of Efflux 3 times in 3 of the 108 shifts Lumi analysed, in 2021 and 2022. It belongs to Fluid Dynamics, in Mechanical Properties of Fluids (Physics). The longest wait between two years asking it was 1 year. In 2022 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
3
in 3 shifts
Years
2 of 8
First asked
2021
last in 2022
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

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

00.050.10’170’200.03’210.07’220’230’240’250’26

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: 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
  • 20211 of 24
  • 20200 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: calculation.

  • Efflux speed with extra load pressure
  • Efflux speed with extra surface pressure

Difficulty

Easy 0Medium 3Hard 0

2 of the 3 questions had a numerical answer.

Every question

All 3 questions

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

  1. 27 Jun 2022, Shift 1 · Q59The area of cross-section of a large tank is 0.5 m20.5\ \mathrm{m^2}. It has a narrow opening near the bottom having area of cross-section…MediumNumerical value
  2. 28 Jul 2022, Shift 2 · Q7Consider a cylindrical tank of radius 1m is filled with water. The top surface of water is at 15 m from the bottom of the cylinder. There…MediumSingle correctHas a figure
  3. 18 Mar 2021, Shift 2 · Q28Consider a water tank as shown in the figure. It’s cross-sectional area is 0.4 m2^2. The tank has an opening B near the bottom whose…MediumNumerical valueHas a figure

Shifts: 18 Mar 2021, Shift 2, 27 Jun 2022, Shift 1, 28 Jul 2022, Shift 2.

Same topic

Other ideas in Fluid Dynamics

Fluid Dynamics has 10 ideas JEE Main has asked; 5 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas