A capillary tube of radius $r$ is dipped in a liquid of density $\rho$ and surface tension $S$. If the angle of contact is $\theta$, the pressure difference between the two surfaces in the beaker and the capillary
A capillary tube of radius $r$ is dipped in a liquid of density $\rho$ and surface tension $S$. If the angle of contact is $\theta$, the pressure difference between the two surfaces in the beaker and the capillary
- A
$\frac{S}{r}\cos \theta $
- B
$\frac{{2S}}{r}\cos \theta $
- C
$\frac{S}{{r\cos \theta }}$
- D
$\frac{{2S}}{{r\cos \theta }}$
Similar Questions
A bubble of $8$ mm diameter is formed in the air. The surface tension of soap solution is $30$ dynes/cm. The excess pressure inside the bubble is ........ $dynes/cm^2$
A bubble of $8$ mm diameter is formed in the air. The surface tension of soap solution is $30$ dynes/cm. The excess pressure inside the bubble is ........ $dynes/cm^2$
Pressure inside two soap bubbles are $1.02 \,atm$ and $1.05 \,atm$ respectively. The ratio of their surface area is .........
Pressure inside two soap bubbles are $1.02 \,atm$ and $1.05 \,atm$ respectively. The ratio of their surface area is .........
If two soap bubbles of different radii are connected by a tube,
If two soap bubbles of different radii are connected by a tube,
When two soap bubbles of radii $a$ and $b ( b > a )$ coalesce, the radius of curvature of common surface is
When two soap bubbles of radii $a$ and $b ( b > a )$ coalesce, the radius of curvature of common surface is
- [JEE MAIN 2021]
A container, whose bottom has round holes with diameter $0.1$ $mm $ is filled with water. The maximum height in cm upto which water can be filled without leakage will be ........ $cm$
Surface tension $= 75 \times 10^{-3}$ $ N/m $ and $g = 10$ $ m/s^2$:
A container, whose bottom has round holes with diameter $0.1$ $mm $ is filled with water. The maximum height in cm upto which water can be filled without leakage will be ........ $cm$
Surface tension $= 75 \times 10^{-3}$ $ N/m $ and $g = 10$ $ m/s^2$: