Angle of Contact

A large tank is filled with two liquids of specific gravities $\text{2}\text{σ}$ and $\text{σ}$. Two holes are made on the wall of the tank as shown. Find the ratio of the distances from $O$ of the points on the ground where the jets from holes $A \mathrm{and} B$ strike.​

The volume of an air bubble is doubled as it rises from the bottom of a lake to its surface. If the atmospheric pressure is H m of mercury & the density of mercury is n times that of lake water. Find the depth of the lake

Pressure inside two soap bubbles are 1.01 and 1.02 atmospheres. Ratio between their volumes is

The excess pressure inside an air bubble of radius r just below the surface of water is ​$P_1$ . The pressure inside a drop of the same radius just outside the surface is $P_2$ . If T is surface tension then

If the radius of a soap bubble is four times that of another,then the ratio of their excess pressures will be

In a long capillary tube when kept vertical in a liquid, rise in liquid is equal to height $h$. Contact angle is $0°$. Now the capillary tube has only $\frac{h}{2}$ length over the liquid surface then the contact angle will be

Shape of the meniscus formed by two liquids when capillaries are dipped in them are shown. In$I$ it is hemispherical where as in $II$it is flat. Pick correct statement regarding contact angles formed by the liquids in both situations

There is an air bubble of radius $1.0 \mathrm{mm}$ in a liquid of surface tension $0.075 \mathrm{N} {\mathrm{m}}^{–1}$ and density $1000 \mathrm{kg} {\mathrm{m}}^{–3}$ at a depth of $10 \mathrm{cm}$ below the free surface. The amount by which the pressure inside the bubble is greater than the atmospheric pressure is _______ $Pa\left(g=10 \mathrm{m} {\mathrm{s}}^{-2}\right)$.

In air, charged soap bubble of into $27$ small soap bubbles of equal radius$r$ Then the ratio of mechanical force acting per unit area of big soap bubble to that of a small soap bubble is

An air bubble of radius $1 \mathrm{mm}$ is at a depth of $8 \mathrm{cm}$ below the free surface of a liquid column. If the surface tension and density of the liquid is $0.1 \mathrm{N} {\mathrm{m}}^{-1}$ and $2000 \mathrm{kg} {\mathrm{m}}^{-3}$ respectively, by what amount is the pressure inside the bubble greater than the atmospheric pressure?
(Take $g=10 \mathrm{m} {\mathrm{s}}^{-2}$)

A bubble has surface tension $S$. The ideal gas inside the bubble has ratio of specific heats $\gamma =\frac{5}{3}$. The bubble is exposed to the atmosphere and it always retains its spherical shape. When the atmospheric pressure is $P_{a1}$, the radius of the bubble is found to be $r_1$ and the temperature of the enclosed gas is $T_1$. When the atmospheric pressure is $P_{\mathrm{a}2}$, the radius of the bubble and the temperature of the enclosed gas are $r_2$ and $T_2$, respectively. Which of the following statement(s) is(are) correct?

Diameters of $2$ water drops are $1 \mathrm{cm}$ and $1.5 \mathrm{cm}$ respectively. Find the ratio of excess pressures inside them.

A liquid is filled in a spherical container of radius $R$ till a height $h$. At this position the liquid surface at the edges is also horizontal. The contact angle is:

When a capillary tube is dipped in a liquid, the liquid surface becomes curved due to force of adhesion $\left(F_1\right)$ and force of cohesion $\left(F_2\right)$. Choose the correct statement

What happens when angle of contact is 90?

What is angle of contact in capillary tube?

What is the angle of contact of a liquid?

What is angle of contact Class 12?

What are characteristics of angle of contact?

What is the effect of temperature on angle of contact?