Q JEE MAIN_2026

Eight mercury drops, each of radius r, coalesce to form a bigger drop. The surface energy released in this process...

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Q JEE MAIN_2026

The surface tension of a soap solution is $3.5 \times 10^{-2} \mathrm{~N} / \mathrm{m}$. The work required to increase the...

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Q JEE MAIN_2026

The surface tension of a soap bubble is $0.03 \mathrm{~N} / \mathrm{m}$. The work done in increasing the diameter of...

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Q JEE MAIN_2026

A liquid drop of diameter 2 mm breaks into 512 droplets. The change in surface energy is $...

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Q JEE MAIN 2024

A big drop is formed by coalescing 1000 small droplets of water. The surface energy will become :

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Q JEE MAIN 2026

A soap bubble of surface tension $0.04 \mathrm{~N} / \mathrm{m}$ is blown to a diameter of 7 cm . If...

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Q JEE MAIN 2026

An air bubble of volume $2.9 \mathrm{~cm}^3$ rises from the bottom of a swimming pool of 5 m deep. At...

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Q JEE MAIN 2026

Given below are two statements: Statement I: Pressure of a fluid is exerted only on a solid surface in contact...

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Q JEE MAIN 2026

Surface tension of two liquids (having same densities), $T_1$ and $T_2$, are measured using capillary rise method utilizing two tubes...

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Q JEE MAIN 2020

A capillary tube made of glass of radius 0.15 mm is dipped vertically in a beaker filled with methylene iodide...

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Q JEE MAIN 2019

If ‘M’ is the mass of water that rises in a capillary tube of radius ‘r’, then mass of water...

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Q JEE MAIN 2019

Space between two concentric conducting spheres of radii a and $\mathrm{b}(\mathrm{b}>\mathrm{a})$ is filled with a medium of resistivity $\rho$. The...

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Q JEE MAIN 2020

A small spherical droplet of density d is floating exactly half immersed in a liquid of density $\rho$ and surface...

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Q JEE MAIN 2021

A soap bubble of radius 3 cm is formed inside the another soap bubble of radius 6 cm. The radius...

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Q JEE MAIN 2021

The area of cross-section of a railway track is $0.01 \mathrm{~m}^2$. the temperature variation is $10^{\circ} \mathrm{C}$. Coefficient of linear...

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Q JEE-MAIN 2021

Two wires of same length and radius are joined end to end and loaded. The Young's moduli of the material...

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Q JEE MAIN 2021

A stone of mass 20 g is projected from a rubber catapult of length 0.1 m and area of cross...

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Q JEE MAIN 2021

For the forward biased diode characteristics shown in the figure, the dynamic resistance at $\mathrm{I}_{\mathrm{D}}=3 \mathrm{~mA}$ will be $\_\_\_\_$ $\Omega$

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Q JEE MAIN 2021

Two small drops of mercury each of radius R coalesce to form a single large drop. The ratio of total...

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Q JEE MAIN 2022

A spherical soap bubble of radius 3 cm is formed inside another spherical soap bubble of radius 6 cm. If...

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Q JEE MAIN 2021

Two separate wires A and B are stretched by 2 mm and 4 mm respectively, when they are subjected to...

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Q JEE_MAIN_2021

When two soap bubbles of radii a and b (b > a) coalesce, the radius of curvature of common surface...

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Q JEE MAIN 2022

A water drop of radius 1cm is broken into 729 equal droplets. If surface tension of water is 75 dyne/cm,...

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Q JEE MAIN 2022

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R)....

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Q JEE MAIN 2022

The velocity of upper layer of water in a river is $36 \mathrm{kmh}^{-1}$. Shearing stress between horizontal layers of water...

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Q JEE MAIN 2022

A water drop of diameter cm is broken into 64 equal droplets. The surface tension of water is 0.075 N/m....

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A small liquid drop of radius R is divided into 27 identical liquid drops. If the surface tension is T,...

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Q JEE MAIN 2024

A big drop is formed by coalescing 1000 small identical drops of water. If $E_1$ be the total surface energy...

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Q JEE MAIN_2023

A spherical drop of liquid splits into 1000 identical spherical drops. If$\mathrm{u}_{\mathrm{i}}$ is the surface energy of the original drop...

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Q JEE MAIN_2025

The excess pressure inside a soap bubble A in air is half the excess pressure inside another soap bubble B...

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Q JEE MAIN 2025

The equation of a wave travelling on a string is $y=\sin [20 \pi x+10 \pi t]$, where $x$ and $t$...

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Q JEE MAIN 2023

The surface tension of soap solution is $3.5 \times 10^{-2} \mathrm{Nm}^{-1}$. The amount of work done required to increase the...

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Q JEE MAIN 2023

There is an air bubble of radius 1.0 mm in a liquid of surface tension $0.075 \mathrm{Nm}^{-1}$ and density 1000...

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Q JEE MAIN_2023

A mercury drop of radius $10^(–3)$ m is broken into 125 equal size droplets. Surface tension of mercury is 0.45...

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Q JEE MAIN 2023

The height of liquid column raised in a capillary tube of certain radius when dipped in liquid A vertically is,...

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Q JEE MAIN 2023

If 1000 droplets of water of surface tension $0.07 \mathrm{~N} / \mathrm{m}$. having same radius 1 mm each, combine to...

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Q JEE MAIN 2023

Surface tension of a soap bubble is $2.0 \times 10^{-2} \mathrm{Nm}^{-1}$. Work done to increase the radius of soap bubble...

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Q JEE MAIN 2024

Given below are two statements: Statement I : If a capillary tube is immersed first in cold water and then...

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Q JEE MAIN 2025

Two water drops each of radius ' $r$ ' coalesce to form a bigger drop. If ' $T$ ' is...

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Q JEE MAIN 2025

Two liquids A and B have ${\theta _A}$ and ${\theta _B}$ as contact angles in a capillary tube. If $...

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Q JEE MAIN 2025

An air bubble of radius 1.0 mm is observed at a depth of 20 cm below the free surface of...

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Q JEE MAIN 2025

The amount of work done to break a big water drop of radius 'R' into 27 small drops of equal...

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Q JEE MAIN 2025

An air bubble of radius 0.1 cm lies at a depth of 20 cm below the free surface of a...

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Q JEE MAIN 2025

Given below are two statements: Statement I: The hot water flows faster than cold water Statement II: Soap water has...

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Q JEE MAIN 2025

Two soap bubbles of radius 2 cm and 4 cm , respectively, are in contact with each other. The radius...

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