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  4. Two capillaries made of the same material with radii r1=1mm and r2=2mm. The rise of the liquid in one capillary (r1 = mm) is 30cm, then the rise in the other will be

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Q. Two capillaries made of the same material with radii $r_{1}=1mm$ and $r_{2}=2mm.$ The rise of the liquid in one capillary $\left(r_{1} = mm\right)$ is $30cm,$ then the rise in the other will be

NTA AbhyasNTA Abhyas 2020

Solution:

$\frac{h_{2}}{h_{1}}=\frac{r_{1}}{r_{2}}=\frac{1}{2}\Rightarrow h_{2}=\frac{30}{2}=15cm$