Surface energy of a liquid - class-XI
Description: surface energy of a liquid | |
Number of Questions: 17 | |
Created by: Nitesh Divan | |
Tags: surface tension properties of matter physics |
What is the change in surface energy, when a mercury drop of radius $r$ splits up into 1000 droplets of radius $r$?
Two soap bubbles have radii in the ratio of $4:3$. What is the ratio of work done to blow these bubbles?
W is the work done, when a bubble of volume V is formed from a solution. How much work is required to be done to form a bubble of volume 2V?
The surface energy of a liquid drop of radius r is proportional to:
A mercury drop of radius 1 cm is broken into 106 droplets of equal size. The work done is
$(T = 35 10^{-2} N/m)$Surface tension of a soap solution is $1.9 10^{-2} N/m.$ Work done in blowing a bubble of 2.0cm diameter will be
The surface tension of a soap solution is $0.035 N/m$. the energy needed to increase the radius of the bubble from $4$ cm to $6$ cm is
Two drops of a liquid are merged to from a single drop. In this process-
Two soap bubbles of radii 4 cm and 3 cm respectively coalesce under isothermal conditions to form a single bubble. What is the radius of the new single bubble?
A square frame of length $L$ is immersed in soap solution and taken out. The force experienced by the square plate is
A spherical water drop of radius $R$ is split up into $8$ equal droplets. If $T$ is the surface tension of water, then the work done in this process is-
A drop of oil is placed on the surface of water. Which of the following statement is correct?
One thousand small water droplets of equal size combine to form a big drop. The ratio of the final surface energy to the initial surface energy is: (Surface tension of water = 70 dyne/cm)
A metal plane having an area of $0.04\ m^{2}$ is placed on a horizontal wooden surface. Oil of coefficient of viscosity $2\ N/ s/m^{2}$ is introduced between the plate and the surface till the thickness of the oil layer is $0.5$ in. The horizontal force needed to drag the plate along the surface with a velocity of $5\ cm/s$ is
Two spherical soap bubbles of a radii $r _1$ and $r _2$ in vacuum coalesce under isothermal conditions. The resulting bubble has the radius $R$ such that
What is the change in surface energy, when a mercury drop of radius $R$ splits up into $1000$ droplets of radius $r$?
Potential energy of a molecule on the surface of a liquid is as compared to another molecule inside of the liquid is