Which of the following graph represents the variation of capillary rise  of liquid with radius of the capillary tube?

1.		2.
3.		4.

If the surface tension of water is 0.06 ${\mathrm{Nm}}^{-1}$, then the capillary rise in a tube of diameter 1 mm is: \((\theta = 0^{\circ})\)
1. 1.22 cm
2. 2.44 cm
3. 3.12 cm
4. 3.86 cm

The wettability of a surface by a liquid depends primarily on:

Water rises to height h in a capillary tube. If the length of the capillary tube above the surface of water is made less than h, then:

A liquid filled in a container has plane meniscus. If $\mathrm{\theta }$ is the angle of contact, then:
1. $\mathrm{\theta }$ = \(0^\circ\)
2. $\mathrm{\theta }$ = \(90^\circ\)
3. $\mathrm{\theta }$ < \(90^\circ\)
4. $\mathrm{\theta }$ = \(180^\circ\)

If a capillary tube is partially dipped vertically into liquid and the levels of the liquid inside and outside are same, then the angle of contact is:

Water rises to a height \(\mathrm{h}\) in a capillary at the surface of earth. On the surface of the moon, the height of water column in the same capillary will be:
1. \(\mathrm{6h}\)                           
2. $\frac{1}{6}\mathrm{h}$
3.  \(\mathrm{h}\)                             
4. \(\mathrm{zero}\)

If the capillary experiment is performed in a vacuum, then for a liquid the capillary will:
1. rise
2. remain the same
3. fall
4. rise to the top

Three liquids of densities ${\rho }_1,$ ${\rho }_2$ $and$ $$ ${\rho }_3$ (with ${\rho }_1>{\rho }_2>{\rho }_3$), having the same value of surface tension T, rise to the same height in three identical capillaries. The angles of contact ${\theta }_1,{\theta }_2$ $and$ ${\theta }_3$ obey: