Physics · JEE

Important Questions: Application of surface tension: drops, bubbles and capillary rise for JEE

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The most important Application of surface tension: drops, bubbles and capillary rise questions for JEE cover conceptual traps, standard results, and numerical patterns from Application of surface tension: drops, bubbles and capillary rise. Goodmarks provides 12+ high-yield MCQs with full solutions.

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Syllabus context

Part of Properties of Solids and Liquids in JEE Main Physics.

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Q1PhysicsUnit 7: Properties of Solids and Liquids

plating is done on objects such as car parts, bath taps, kitchen gas burners, bicycle handlebars, wheel rims because of its shiny appearance

Q2PhysicsUnit 7: Properties of Solids and Liquids

Porters (coolies) place on their heads a round piece of cloth, to the area of contact of the load with their head.

Q3PhysicsUnit 7: Properties of Solids and Liquids

A soap bubble of radius

3 \mathrm{cm}

is charged with surface charge density

\sigma

such that

\frac{\sigma^{2}}{\epsilon_{0}}=0.4 S I

units. The excess pressure inside the bubble in SI unit (surface tension of soap solution

=3 \times

10^{-3} \mathrm{N} / \mathrm{m}

) is:

Q4PhysicsUnit 7: Properties of Solids and Liquids

The potential of a large liquid drop when eight liquid drops are combined is

20 V

Then the potential of each single drop was:

Q5PhysicsUnit 7: Properties of Solids and Liquids

At certain temperature radius of an air bubble is doubled when it comes to the top from bottom of a mercury column of height H if the pressure is:

Q6PhysicsUnit 7: Properties of Solids and Liquids

The air pollution caused by the internal combustion engine vehicles can be reduced by using:

Q7PhysicsUnit 7: Properties of Solids and Liquids

Chromium plating is done on many articles so that they

Q8PhysicsUnit 7: Properties of Solids and Liquids

Two capillary tubes of the same material but of different radii are dipped in a liquid. The heights to which the liquid rises in the two tubes are

2.2 c m

and

6.6 c m .

The ratio of radii of the tubes will be

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Frequently asked questions

What makes a Application of surface tension: drops, bubbles and capillary rise question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Properties of Solids and Liquids are high-weightage?

Key areas include Application of surface tension: drops, bubbles and capillary rise. Prioritise these before moving to edge cases.

How many important questions should I revise?

Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

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