JEE Main Physics · Mechanical Properties of Fluids

Surface Tension in JEE Main

Name: Surface Tension: JEE Main previous year questions
Creator: Lumi

Surface Tension (Physics, Mechanical Properties of Fluids) came 13 times in 13 of the 42 JEE Main shifts Lumi analysed, across 7 distinct ideas. 12 of them came in 2024–26; it was last asked in 2026.

Questions: 13; in 13 shifts
Ideas asked: 7; 2 asked more than once
Numerical answer: 4; 31% of its questions
Pattern: Frequent; last asked 2026

Questions each year

In the shifts Lumi analysed for each year.

Difficulty and format

Easy 9Medium 4Hard 0

Format

Single correct8 Q
Numerical value4 Q
Two statements1 Q

Ideas inside the topic

7 ideas

Excess Pressure in Soap Bubbles4 Q
Splitting and Coalescence4 Q
Capillary Rise (Ascent Formula)1 Q
Surface Tension Force on a Floating Sphere1 Q
Capillary Rise in a Tilted Tube1 Q
Work Done in Expanding a Soap Bubble1 Q
Work Done in Expanding a Soap Bubble1 Q

Where it sits

Part of Mechanical Properties of Fluids, which had 39 questions in all. Surface Tension accounts for 33% of them. In Lumi's JEE taxonomy it belongs to Properties of Matter.

Every question

All 13 Surface Tension questions

Newest first, each with its options and official answer.

2 Apr 2026, Shift 1 · Q45A liquid drop of diameter $2$ mm breaks into $512$ droplets. The change in surface energy is $\alpha\times10^{-6}$ J. The value of…EasySingle correct
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 Apr 2026, Shift 1 · Q47The surface tension of a soap solution is $3.5\times10^{-2}$ N/m. The work required to increase the radius of a soap bubble from $1$ cm to…MediumNumerical value
5 Apr 2026, Shift 2 · Q33Eight mercury drops, each of radius $r$ , coalesce to form a bigger drop. The surface energy released in this process is __________. (S is…EasySingle correct
2 Apr 2025, Shift 2 · Q31Two water drops each of radius $r$ coalesce to form a bigger drop. If $T$ is the surface tension, the surface energy released in this…EasySingle correct
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 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 $\approx 0^\circ$ )…MediumSingle correct
6 Apr 2024, Shift 2 · Q38Pressure inside a soap bubble is greater than the pressure outside by an amount : (given : $R$ = Radius of bubble, $S$ = Surface tension…EasySingle correct
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
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
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
30 Jan 2024, Shift 2 · Q53A big drop is formed by coalescing 1000 small identical drops of water. If $E_1$ be the total surface energy of 1000 small drops of water…EasyNumerical value
9 Jan 2020, Shift 2 · Q9A small spherical droplet of density $d$ is floating exactly half immersed in a liquid of density $\rho$ and surface tension $T$ . The…MediumSingle correct