Derive an expression for atmospheric pressure.

Derive an expression for the excess pressure (i) inside a liquid drop (ii) inside a soap bubble.

Define surface tension . Derive an expression for the excess pressure inside a liquid drop. Extend it for a soap bubble.

Derive an expression for the pressure exerted by a liquid column.

Derive an expression for the pressure of a liquid of density rho at a depth h. (Similar Question : Show that the pressure of a liquid is same in ali direction at a horizontal plane within it.)