A liquid is filled in a spherical container of radius R up to a height `h`. At this position the liquid surface at the end is also horizontal. The contact angle is

(i) Water drops on two surfaces A and B has been shown in figure. Which surface is hydrophobic and which surface is hydrophilic? (ii) A liquid is filled in a spherical container of radius R till a height h. In this position the liquid surface at the edges is also horizontal. What is the contact angle between the liquid and the container wall?

A liquid is filled in a container to a height H. A small hole is opened in the side of the container a height h below the surface of the liquid. The distance L from the bottom of the container of the point where the stream of liquid leaving the container meets the ground is :

A liquid does not wet the solid surface if the angle of contact is

The radius of a cylinderical container is r. When a liquid is poured into the container up to a height h, then the thrust on the bottom and that on the lateral surface of the container become equal. In this case

A cylindrical vessel of radius R=1m and height H=3m is filled with an ideal liquid up to a height of h=2 m. the contaienr with liquid is rotated about its central vertical axis such that the liquid just rises to the brim. Calculate the angular speed (omega) of the container.