What is surface energy?
(N/A) Surface energy is defined as the amount of work done in increasing the surface area of a liquid by a unit amount at a constant temperature.
It is numerically equal to the surface tension of the liquid.
Mathematically,if $W$ is the work done to increase the surface area by $\Delta A$,then the surface energy $S$ is given by $S = \frac{W}{\Delta A}$.
The $SI$ unit of surface energy is $J/m^2$ or $N/m$.
It is numerically equal to the surface tension of the liquid.
Mathematically,if $W$ is the work done to increase the surface area by $\Delta A$,then the surface energy $S$ is given by $S = \frac{W}{\Delta A}$.
The $SI$ unit of surface energy is $J/m^2$ or $N/m$.
Explore More
Similar Questions
$A$ mercury drop of $1\, cm$ radius is broken into ${10^6}$ small drops. The energy used will be (surface tension of mercury is $35 \times {10^{ - 3}} \, N/cm$).
Medium
View SolutionIf the work done in blowing a soap bubble of volume $V$ is $W$,then the work done in blowing a soap bubble of volume $2V$ will be
Two mercury drops of radii $r$ and $2r$ merge to form a bigger drop. The surface energy released in the process is nearly (Surface tension of mercury is $S$ and take $9^{2/3} = 4.326$). (in $\pi r^2 S$)
The radius $R$ of the soap bubble is doubled under isothermal conditions. If $T$ is the surface tension of the soap bubble, the work done in doing so is given by (in $\pi R^2 T$)
DifficultMHT CET 2011
View SolutionThe work done in doubling the radius of a soap bubble of radius $2\,cm$ will be ( Surface Tension of soap solution $= 30\,dyne/cm$ ).
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo