Fill in the blanks:
$(i)$ As the surface area is large,the potential energy of the molecules is ...... (more / less).
$(ii)$ As the surface area is small,the potential energy of its molecules is ...... (more / less).
$(i)$ As the surface area is large,the potential energy of the molecules is ...... (more / less).
$(ii)$ As the surface area is small,the potential energy of its molecules is ...... (more / less).
(A) The potential energy of molecules at the surface of a liquid is greater than that of molecules in the interior because surface molecules experience a net inward force.
$(i)$ When the surface area is large,more molecules are present at the surface,which means the total potential energy of the surface molecules is more.
$(ii)$ When the surface area is small,fewer molecules are present at the surface,which means the total potential energy of the surface molecules is less.
Therefore,the answers are $(i)$ more and $(ii)$ less.
$(i)$ When the surface area is large,more molecules are present at the surface,which means the total potential energy of the surface molecules is more.
$(ii)$ When the surface area is small,fewer molecules are present at the surface,which means the total potential energy of the surface molecules is less.
Therefore,the answers are $(i)$ more and $(ii)$ less.
Explore More
Similar Questions
Two small drops of mercury each of radius $R$ coalesce to form a single large drop. The ratio of total surface energy before and after the change is -
Difficult
View SolutionConsider a soap film on a rectangular frame of wire of area $4 \times 4 \text{ cm}^2$. If the area of the soap film is increased to $4 \times 5 \text{ cm}^2$,the work done in the process will be (The surface tension of the soap film is $3 \times 10^{-2} \text{ N/m}$).
Difficult
View SolutionThe work done in splitting a water drop of radius $R$ into $64$ droplets is ($T$ is the surface tension of water) (in $\pi R^2 T$)
DifficultMHT CET 2026
View Solution$A$ liquid drop having surface energy $E$ is spread into $216$ droplets of the same size. The final surface energy of the droplets is (in $E$)
$A$ soap bubble of radius $r$ is blown up to form a bubble of radius $2r$ under isothermal conditions. If $T$ is the surface tension of the soap solution, the energy spent in the blowing is: (in $\pi T r^2$)
Vedclass 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