A capillary tube (A) is dipped in water. Another identical tube (B) is dipped in a soap-water solution. Which of the following shows the relative nature of the liquid columns in the two tubes?

In case of water, the meniscus shape is concave upwards, from ascent formula  $\mathrm{h}=\frac{2\sigma \mathrm{cos\theta }}{\mathrm{r\rho g}}$
The surface tension $\left(\mathrm{\sigma }\right)$ of soap solution is less than water. Therefore, height of capillary rise for soap solution should be less as compared to water. As in the case of water, the meniscus shape of soap solution is also concave upwards.