A spherical soap bubble inside an air chamber at pressure 
has a certain radius so that the excess pressure inside the bubble is 
. Now, the chamber pressure is reduced to 
so that the bubble radius and its excess pressure change. In this process, all the temperatures remain unchanged. Assume air to be an ideal gas and the excess pressure 
in both the cases to be much smaller than the chamber pressure. The new excess pressure 
in is
Text Solution
Verified by Experts96
(96)
Since the situation follow isothermal condition.
and 
So for isothermal condition
here 
and 
So 
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