Apoorva Arora
Last Activity: 10 Years ago
It is because of surface tension that pressure of a liquid increases within a bubble. Consider the free-body diagram of a bubble as shown in Fig. If the force due to surface tension at the edge is balanced by the pressure force inside the bubble, we have
i.e
where p is the pressure difference between inside the drop and that outside. In addition the pressure inside the bubble is greater than that outside.
Thanks and Regards
Apoorva Arora
IIT Roorkee
askIITians Faculty