Find the excess pressure inside
Text Solution
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[ 465 N/m 2 30 N/m 2 38 N/m 2 ]Sol.
drop of r = 2 mm.
P excess = 
= 
= 465 
Soap bubble has 2 films:
so P excess = 
= 
= 30 
As the air bubble is being formed inside a tank of water; so only one layer is formed.
P excess = 
= 
= 38 
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