A capillary tube stands with its lower end dipped into liquid for which the angle of contact is $90^{\circ}$…
A capillary tube stands with its lower end dipped into liquid for which the angle of contact is $90^{\circ}$. The liquid will
- neither rise nor fall.
- get depressed only.
- rise only.
- rise upto the top of the tube.
Solution
$\begin{aligned}
& \mathrm{h}=\frac{2 \mathrm{~T} \cos \theta}{\rho g r} \\
& \mathrm{~h}=\frac{2 \mathrm{~T} \cos 90}{\rho g r} \\
& \mathrm{~h}=0^{\quad \ldots\left(\cos 90^{\circ}=0\right)}
\end{aligned}$
Hence, the liquid will neither rise nor fall.
Asked in: MHT CET 2024 (11 May Shift 2)
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