The adjoining diagram shows three soap bubbles A, B and C prepared by blowing the capillary tube fitted with stop cocks, S1, S2 and S3. With stop cock S closed and stop cocks S1, S2 and S3 opened
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a
B will start collapsing with volumes of A and C increasing
b
C will start collapsing with volumes of A and B increasing
c
C and A both will start collapsing with the volume of B increasing
d
Volumes of A, B and C will become equal at equilibrium
answer is C.
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Detailed Solution
Excess pressure inside soap bubble is inversely proportional to the radius of bubble i.e. ΔP∝1r This means that bubbles A and C posses greater pressure inside it than B. So the air will move from A and C towards B.