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CGP EDU Academic Team
Published on: September 12, 2026
In a capillary tube, water rises to 3 mm. The height of water that will rise in another capillary tube having one-third radius of the first is
Text Solution
Verified by ExpertsThe correct answer is:
D
$For rise in capillary, the formula is h = \frac{2T}{rg} So, for first capillary tube h_1 = \frac{2T}{r_1 \rho g} For second, h_2 = \frac{2T}{r_2 \rho g} \frac{h_1}{h_2} = \frac{r_2}{r_1} \Rightarrow \frac{3}{h_2} = \frac{r_1}{3 \times r_1} \left[ r_2 = \frac{r_1}{3} \right] h_2 = 9 \text{ mm}$
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