JEE Main Physics · Mechanical Properties of Fluids

Viscosity in JEE Main

Name: Viscosity: JEE Main previous year questions
Creator: Lumi

Viscosity (Physics, Mechanical Properties of Fluids) came 10 times in 10 of the 42 JEE Main shifts Lumi analysed, across 7 distinct ideas. 6 of them came in 2024–26; it was last asked in 2026.

Questions: 10; in 10 shifts
Ideas asked: 7; 3 asked more than once
Numerical answer: 1; 10% of its questions
Pattern: Asked most years; last asked 2026

Questions each year

In the shifts Lumi analysed for each year.

Difficulty and format

Easy 3Medium 6Hard 1

Format

Single correct8 Q
Assertion–reason1 Q
Numerical value1 Q

Ideas inside the topic

7 ideas

Terminal Velocity of Rising Bubbles2 Q
Terminal Velocity Calculation2 Q
Terminal Velocity Radius Proportionality2 Q
Units and Dimensions of Viscosity1 Q
Falling Sphere Viscometry1 Q
Radius Dependence of Terminal Velocity1 Q
Velocity-Time Graph of Terminal Velocity1 Q

Where it sits

Part of Mechanical Properties of Fluids, which had 39 questions in all. Viscosity accounts for 26% of them. In Lumi's JEE taxonomy it belongs to Properties of Matter.

Some questions sit in other chapters too: Units and Measurements.

Every question

All 10 Viscosity questions

Newest first, each with its options and official answer.

2 Apr 2026, Shift 2 · Q35If an air bubble of diameter 2 mm rises steadily through a liquid of density 2000 kg/m $^3$ at a rate of 0.5 cm/s, then the coefficient of…MediumSingle correct
8 Apr 2026, Shift 2 · Q34A spherical liquid drop of radius $R$ acquires the terminal velocity $v_1$ when falls through a gas of viscosity $\eta$ . Now the drop is…MediumSingle correct
3 Apr 2025, Shift 2 · Q32A solid steel ball of diameter 3.6 mm acquired terminal velocity $2.45 \times 10^{-2}$ m/s while falling under gravity through an oil of…EasySingle correct
9 Apr 2024, Shift 2 · Q40A spherical ball of radius $1\times10^{-4}$ m and density $10^5\ \mathrm{kg/m^3}$ falls freely under gravity through a distance $h$ before…HardSingle correct
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
31 Jan 2024, Shift 2 · Q37A small spherical ball of radius $r$ , falling through a viscous medium of negligible density has terminal velocity 'v'. Another ball of…MediumSingle correct
6 Apr 2023, Shift 1 · Q33A small ball of mass M and density $\rho$ is dropped in a viscous liquid of density $\rho_0$ . After some time, the ball falls with a…EasySingle correct
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
25 Jul 2022, Shift 1 · Q31If momentum [P], area [A] and time [T] are taken as fundamental quantities, then the dimensional formula for coefficient of viscosity is :MediumSingle correct
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 $^{-3}$ at the rate of 0.35…MediumNumerical value