A soap bubble of radius R is surrounded by another soap bubble of radius 2R, as shown. Take surface tension = S. Then, the pressure inside the smaller soap bubble, inexcess of the atmospheric pressure, will be
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a
4SR
b
3SR
c
6SR
d
None of these
answer is C.
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Detailed Solution
P1-P0 = 4S2R------(i)P2-P1 = 4SR-----(ii)From (i) and (ii) P2-P0 = 6SR
A soap bubble of radius R is surrounded by another soap bubble of radius 2R, as shown. Take surface tension = S. Then, the pressure inside the smaller soap bubble, inexcess of the atmospheric pressure, will be