Surface Tension — JEE Main PYQs & Practice Questions

Surface Tension is a Physics chapter in the JEE Main syllabus. This page brings together 53 previous-year and practice questions on Surface Tension, organised into 4 topics: Surface Energy and Surface Tension, Excess Pressure in Drops and Bubbles, Capillarity and Angle of Contact. Most questions come with a step-by-step solution you can work through free in PrepWiser.

Download Surface Tension JEE Main PYQs as a free PDF (with answer key)

Revise this chapter: Revision notes · Formula sheet

Chapter weightage: how many questions each chapter had per shift in the 2024–26 papers.

Surface Energy and Surface Tension

• A small spherical droplet of density d is floating exactly half immersed in a liquid of…
• A small liquid drop of radius R is divided into 27 identical liquid drops. If the…
• The surface tension of a soap bubble is 0.03 N/m. The work done in increasing the…
• Given below are two statements: Statement I: The hot water flows faster than cold water…
• Two water drops each of radius ' r ' coalesce to form a bigger drop. If ' T ' is the…
• A big drop is formed by coalescing 1000 small droplets of water. The surface energy will…
• A big drop is formed by coalescing 1000 small droplets of water. The ratio of surface…
• A large number of water drops, each of radius r, combine to have a drop of radius R. If…
• A water drop of diameter 2 cm is broken into 64 equal droplets. The surface tension of…
• If 1000 droplets of water of surface tension 0.07 N / m, having same radius 1 mm each…
• A liquid drop of diameter 2 mm breaks into 512 droplets. The change in surface energy is…
• A water drop of radius 1 cm is broken into 729 equal droplets. If surface tension of…
• Two small drops of mercury each of radius R coalesce to form a single large drop. The…
• The surface tension of soap solution is 3.5 × 10⁻² Nm⁻¹. The amount of work done…
• A soap bubble of surface tension 0.04 N/m is blown to a diameter of 7 cm . If…
• A big drop is formed by coalescing 1000 small identical drops of water. If E₁ be the…
• Surface tension is responsible for the nearly spherical shape of small liquid drops.
• Surface tension of a soap bubble is 2.0 × 10⁻² Nm⁻¹. Work done to increase the radius of…
• The SI unit of surface tension is:
• Eight mercury drops, each of radius r, coalesce to form a bigger drop. The surface…

Excess Pressure in Drops and Bubbles

• A drop of liquid of density ρ is floating half immersed in a liquid of density σ and…
• A liquid column of height 0.04 cm balances excess pressure of a soap bubble of certain…
• When two soap bubbles of radii a and b (b > a) coalesce, the radius of curvature of…
• Two soap bubbles of radius 2 cm and 4 cm , respectively, are in contact with each other…
• Two spherical soap bubbles of radii r₁ and r₂ in vacuum combine under isothermal…
• A spherical soap bubble of radius 3 cm is formed inside another spherical soap bubble of…
• There is an air bubble of radius 1.0 mm in a liquid of surface tension 0.075 Nm⁻¹ and…
• A soap bubble of radius 3 cm is formed inside the another soap bubble of radius 6 cm…
• An air bubble of radius 0.1 cm lies at a depth of 20 cm below the free surface of a…
• Pressure inside two soap bubbles are 1.01 and 1.02 atmosphere, respectively. The ratio…
• Pressure inside a soap bubble is greater than the pressure outside by an amount : (given…
• The excess pressure inside a soap bubble A in air is half the excess pressure inside…
• The excess pressure inside a liquid drop is 500 Nm⁻². If the radius of the drop is 2 mm…
• An air bubble of radius 1.0 mm is observed at a depth 20 cm below the free surface of a…
• The excess pressure inside a soap bubble is thrice the excess pressure inside a second…

Capillarity

• The height of liquid column raised in a capillary tube of certain radius when dipped in…
• A capillary tube made of glass of radius 0.15 mm is dipped vertically in a beaker filled…
• Given below are two statements: Statement I : If a capillary tube is immersed first in…
• When a long glass capillary tube of radius 0.015 cm is dipped in a liquid, the liquid…
• A capillary tube of radius 0.1 mm is partly dipped in water (surface tension 70 dyn/cm…
• Surface tension of two liquids (having same densities), T₁ and T₂, are measured using…
• When a part of a straight capillary tube is placed vertically in a liquid, the liquid…
• Given below are two statements : Statement I : When a capillary tube is dipped into a…
• Two narrow bores of diameter 5.0 mm and 8.0 mm are joined together to form a U-shaped…
• Water rises to height h in a capillary tube of radius r. If the radius is doubled (same…

Angle of Contact

• Given below are two statements : One is labelled as Assertion (A) and the other is…
• Given below are two statements : Statement I : The contact angle between a solid and a…
• Two liquids A and B have θ_A and θ_B as contact angles in a capillary tube. If K=cos θ_A…

More Physics chapters

• Basic Mathematics for Physics
• Units, Dimensions & Errors
• Rectilinear Motion
• Vectors
• Projectile Motion & Relative Motion
• Newton's Laws of Motion
• Friction
• Circular Motion
• Work, Energy & Power
• Centre of Mass & Linear Momentum
• Collision
• Rotational Motion
• Gravitation
• Simple Harmonic Motion
• Elasticity
• Fluid Mechanics
• Thermometry & Calorimetry
• Kinetic Theory of Gases
• Thermodynamics
• Heat Transfer
• Mechanical Waves
• Sound Waves
• Experimental Skills
• Electrostatics I — Charges, Field & Gauss's Law
• Electrostatics II — Potential & Capacitance
• Current Electricity
• Moving Charges & Magnetism
• Magnetism & Matter
• Electromagnetic Induction
• Alternating Current
• Electromagnetic Waves
• Ray Optics
• Wave Optics
• Dual Nature of Radiation & Matter
• Atomic Physics
• Nuclear Physics
• Semiconductors & Electronic Devices
• Communication Systems

Frequently asked questions

How many Surface Tension questions are there for JEE Main?

PrepWiser has 53 Surface Tension questions for JEE Main, grouped into 4 topics such as Surface Energy and Surface Tension, Excess Pressure in Drops and Bubbles and Capillarity.

Are these Surface Tension questions from previous-year JEE Main papers?

Yes — most are genuine previous-year questions from past JEE Main papers, and the rest are practice questions written to match the JEE Main pattern and difficulty.

Where can I see the answers and solutions to these Surface Tension questions?

Open any Surface Tension question in PrepWiser (it is free) to attempt it; most come with a step-by-step solution.