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Friday, 9 October

JEE Main Physics · Class 11

Mechanical Properties of Fluids: JEE Main previous year questions

Mechanical Properties of Fluids had 39 questions in the 42 JEE Main shifts Lumi analysed, about 0.7 a shift, asked in 30 of 42 shifts. It ranks 16 of 29 Physics chapters by questions; 5% of its questions were hard.

Questions
39
in 30 of 42 shifts
A shift, on average
0.7
of 25 Physics questions
Since 2024
+0.6
0.5 a shift in 2017–23, 1.1 in 2024–26
Numerical answer
9
23% of its questions

Year by year

How often it came

Questions in the analysed shifts of each year. Years differ in how many shifts Lumi analysed, so read the bars with the shift count.

Questions each year
06120’175’201’211’223’2311’248’2510’26

2017: 1 shifts · 2020: 4 shifts · 2021: 4 shifts · 2022: 4 shifts · 2023: 4 shifts · 2024: 8 shifts · 2025: 8 shifts · 2026: 9 shifts

Difficulty by year
  • 2017
  • 20205
  • 20211
  • 20221
  • 20233
  • 202411
  • 20258
  • 202610
  • Easy
  • Medium
  • Hard

Inside the chapter

Topics and the ideas that repeat

5 topics and 24 distinct ideas; 7 ideas were asked more than once. Most questions are single correct and calculation.

Topics, by questions

1 questions had no close topic in our taxonomy and are counted for the chapter only.

Ideas asked most
7 repeat

Study it on Lumi

Mechanical Properties of Fluids: the interactive lesson

Every question

All 39 Mechanical Properties of Fluids questions

Newest first. Each opens with its options and the official answer.

2026 10 questions

  1. 2 Apr 2026, Shift 1 · Q45A liquid drop of diameter 22 mm breaks into 512512 droplets. The change in surface energy is α×10−6\alpha\times10^{-6} J. The value of…EasySingle correct
  2. 2 Apr 2026, Shift 1 · Q50A tub is filled with water and a wooden cube 10 cm×10 cm×10 cm10\ \mathrm{cm}\times10\ \mathrm{cm}\times10\ \mathrm{cm} is placed in the water. The…EasyNumerical value
  3. 2 Apr 2026, Shift 2 · Q33The surface tension of a soap bubble is 0.03 N/m. The work done in increasing the diameter of bubble from 2 cm to 6 cm is…EasySingle correct
  4. 2 Apr 2026, Shift 2 · Q35If an air bubble of diameter 2 mm rises steadily through a liquid of density 2000 kg/m3^3 at a rate of 0.5 cm/s, then the coefficient of…MediumSingle correct
  5. 4 Apr 2026, Shift 1 · Q47The surface tension of a soap solution is 3.5×10−23.5\times10^{-2} N/m. The work required to increase the radius of a soap bubble from 11 cm to…MediumNumerical value
  6. 4 Apr 2026, Shift 2 · Q32A water spray gun is attached to a hose of cross sectional area 30 cm230\ \mathrm{cm^2}. The gun comprises of 10 perforations each of cross…EasySingle correct
  7. 5 Apr 2026, Shift 2 · Q33Eight mercury drops, each of radius rr, coalesce to form a bigger drop. The surface energy released in this process is __________. (S is…EasySingle correct
  8. 6 Apr 2026, Shift 2 · Q34A cylindrical vessel of 40 cm radius is completely filled with water and its capacity is 528 dm3^3 (dm : decimeter) The vessel is placed…MediumSingle correct
  9. 8 Apr 2026, Shift 2 · Q33A liquid of density 600 kg/m3^3 flowing steadily in a tube of varying cross-section. The cross-section at a point AA is 1.0 cm2^2 and…EasySingle correct
  10. 8 Apr 2026, Shift 2 · Q34A spherical liquid drop of radius RR acquires the terminal velocity v1v_1 when falls through a gas of viscosity η\eta. Now the drop is…MediumSingle correct

2025 8 questions

  1. 2 Apr 2025, Shift 1 · Q47A vessel with square cross-section and height of 6 m is vertically partitioned. A small window of 100 cm2100\ \mathrm{cm}^2 with hinged door is…MediumNumerical value
  2. 2 Apr 2025, Shift 2 · Q31Two water drops each of radius rr coalesce to form a bigger drop. If TT is the surface tension, the surface energy released in this…EasySingle correct
  3. 3 Apr 2025, Shift 1 · Q32Consider a completely full cylindrical water tank of height 1.6 m and of cross-sectional area 0.5 m20.5\ \mathrm{m^2}. It has a small hole in…MediumSingle correct
  4. 3 Apr 2025, Shift 2 · Q30Two cylindrical vessels of equal cross sectional area of 2 m22\,\mathrm{m^2} contain water upto heights 10m and 6m, respectively. If the…MediumSingle correct
  5. 3 Apr 2025, Shift 2 · Q32A solid steel ball of diameter 3.6 mm acquired terminal velocity 2.45×10−22.45 \times 10^{-2} m/s while falling under gravity through an oil of…EasySingle correct
  6. 3 Apr 2025, Shift 2 · Q47The excess pressure inside a soap bubble A in air is half the excess pressure inside another soap bubble B in air. If the volume of the…EasyNumerical value
  7. 7 Apr 2025, Shift 2 · Q32A capillary tube of radius 0.1 mm is partly dipped in water (surface tension 70 dyn/cm and glass water contact angle ≈0∘\approx 0^\circ)…MediumSingle correct
  8. 8 Apr 2025, Shift 2 · Q48A sample of a liquid is kept at 1 atm. It is compressed to 5 atm which leads to change of volume of 0.8 cm3^3. If the bulk modulus of the…EasyNumerical value

2024 11 questions

  1. 6 Apr 2024, Shift 2 · Q38Pressure inside a soap bubble is greater than the pressure outside by an amount : (given : RR = Radius of bubble, SS = Surface tension…EasySingle correct
  2. 8 Apr 2024, Shift 1 · Q36Correct Bernoulli's equation is (symbols have their usual meaning) :EasySingle correct
  3. 8 Apr 2024, Shift 1 · Q53A liquid column of height 0.04 cm balances excess pressure of a soap bubble of certain radius. If density of liquid is…MediumNumerical value
  4. 9 Apr 2024, Shift 1 · Q37A sphere of relative density σ\sigma and diameter D has concentric cavity of diameter d. The ratio of Dd\frac{D}{d}, if it just floats on…MediumSingle correct
  5. 9 Apr 2024, Shift 2 · Q39The excess pressure inside a soap bubble is thrice the excess pressure inside a second soap bubble. The ratio between the volume of the…EasySingle correct
  6. 9 Apr 2024, Shift 2 · Q40A spherical ball of radius 1×10−41\times10^{-4} m and density 105 kg/m310^5\ \mathrm{kg/m^3} falls freely under gravity through a distance hh before…HardSingle correct
  7. 29 Jan 2024, Shift 1 · Q37Given below are two statements: Statement I : If a capillary tube is immersed first in cold water and then in hot water, the height of…EasyTwo statements
  8. 29 Jan 2024, Shift 1 · Q53In a test experiment on a model aeroplane in wind tunnel, the flow speeds on the upper and lower surfaces of the wings are…EasyNumerical value
  9. 30 Jan 2024, Shift 2 · Q53A big drop is formed by coalescing 1000 small identical drops of water. If E1E_1 be the total surface energy of 1000 small drops of water…EasyNumerical value
  10. 31 Jan 2024, Shift 1 · Q37A small steel ball is dropped into a long cylinder containing glycerine. Which one of the following is the correct representation of the…EasySingle correctHas a figure
  11. 31 Jan 2024, Shift 2 · Q37A small spherical ball of radius rr, falling through a viscous medium of negligible density has terminal velocity 'v'. Another ball of…MediumSingle correct

2023 3 questions

  1. 6 Apr 2023, Shift 1 · Q33A small ball of mass M and density ρ\rho is dropped in a viscous liquid of density ρ0\rho_0. After some time, the ball falls with a…EasySingle correct
  2. 8 Apr 2023, Shift 2 · Q35A hydraulic automobile lift is designed to lift vehicles of mass 5000 kg. The area of cross section of the cylinder carrying the load is…EasySingle correct
  3. 13 Apr 2023, Shift 2 · Q36Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : A spherical body of…MediumAssertion–reason

2022 1 questions

  1. 28 Jul 2022, Shift 1 · Q58The diameter of an air bubble which was initially 2 mm, rises steadily through a solution of density 1750 kg m−3^{-3} at the rate of 0.35…MediumNumerical value

2021 1 questions

  1. 16 Mar 2021, Shift 2 · Q8What will be the nature of flow of water from a circular tap, when its flow rate increased from 0.18 L/min to 0.48 L/min ? The radius of…MediumSingle correct

2020 5 questions

  1. 8 Jan 2020, Shift 1 · Q6Consider a solid sphere of radius R and mass density ρ(r)=ρ0(1−r2R2)\rho(r) = \rho_0\left(1-\frac{r^2}{R^2}\right), 0<r≤R0 < r \le R. The minimum density…HardSingle correct
  2. 8 Jan 2020, Shift 1 · Q7A leak proof cylinder of length 1 m, made of a metal which has very low coefficient of expansion is floating vertically in water at…MediumSingle correct
  3. 9 Jan 2020, Shift 2 · Q9A small spherical droplet of density dd is floating exactly half immersed in a liquid of density ρ\rho and surface tension TT. The…MediumSingle correct
  4. 2 Sep 2020, Shift 1 · Q8A cylindrical vessel containing a liquid is rotated about its axis so that the liquid rises at its sides as shown in the figure. The…MediumDiagram basedHas a figure
  5. 6 Sep 2020, Shift 2 · Q7A fluid is flowing through a horizontal pipe of varying cross-section, with speed v ms−1v\,\mathrm{ms^{-1}} at a point where the pressure is P…EasySingle correct

Pattern: Asked most years.