Question

# When two capillary tubes A and B are immersed in water, the heights of water columns are found to be in the ratio 2:3. The ratio of the radii of tubes A and B is:

A
2 : 3
B
4 : 9
C
9 : 4
D
3 : 2

Solution

## The correct option is D 3 : 2$$h \propto \dfrac{1}{r}$$$$h_{1}r_{1}=h_{2}r_{2}$$$$\dfrac{2}{3}r_{1}=r_{2}\Rightarrow \dfrac{r_{1}}{r_{2}}=3/2$$Physics

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