Excess pressure inside a liquid drop is given by .?
sudhanshu , 11 Years ago
Grade 12
General Physics> Excess pressure inside a liquid drop is g...
1 Answers
Apoorva Arora
Last Activity: 11 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.1.8. If the force due to surface tension at the edge is balanced by the pressure force inside the bubble, we have
so,
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.
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