Physics · JEE

Application of surface tension: drops, bubbles and capillary rise Mock Test for JEE

12+ syllabus-aligned questions available

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Syllabus context

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

Free sample questions

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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

Q9PhysicsUnit 7: Properties of Solids and Liquids

Assertion:Chromium plating is done on many objects like car parts, wheel rims and bath taps. Reason:The chromed layer can be decorative, provide corrosion resistance, ease cleaning procedures, or increase surface hardness.

Q10PhysicsUnit 7: Properties of Solids and Liquids

Assertion While blowing a soap bubble, to increase the size of soap babble, we have to increase the air pressure within the soap bubble. Reason To increase the size of soap bubble, more air has to be pushed into the bubble.

Q11PhysicsUnit 7: Properties of Solids and Liquids

The biggest drawback of tidal energy is:

Q12PhysicsUnit 7: Properties of Solids and Liquids

Which of the following feature makes chromium suitable for electroplating?

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