Question 199: Properties of Matter

Question

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?

Accepted Answer

In case of water, the meniscus shape is concave upwards. Also according to ascent formula $$h = {{2T\,\cos \,	heta } \over {rho g}}$$
The surface tension $$(I)$$ of soap solution is less than water. Therefore rise of soap solution in the capillary tube is less as compared to water. As in the case of water. the meniscus shape of soap solution is also concave upwards.

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Properties of Matter

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?

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