Quiz:

1. We have seen that when a capillary glass tube is dipped into water the water level rises inside the tube. But when an wide-bore glass tube is dipped in water no rise is observed. Why?

2. How does the surface tension of pure water differ from that of salt solution?

3. Will all liquids rise in the capillary glass tubes ?

4. What would happen if the capillary tube is broken at a height less than ‘h’? Will the liquid overflow?

5. What is the principle of the mercury barometer ?