MCQ
In a capillary tube, water rises by $1.2\, mm$. The height of water that will rise in another capillary tube having half the radius of the first, is ........ $mm$
- A$1.2$
- ✓$2.4$
- C$0.6$
- D$0.4$
✓
Answer
Correct option: B.
$2.4$
b
(b) $h \propto \frac{1}{r}$
(b) $h \propto \frac{1}{r}$
${r_1}{h_1} = {r_2}{h_2} \Rightarrow {h_2} = \frac{{{r_1}{h_1}}}{{{r_2}}} = 2.4\;mm$
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