# Two soap bubbles A and B are kept in a closed chamber where the air is maintained at pressure 8N//m^2.The radii of bubbles A and B are 2cm and 4cm,

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Two soap bubbles A and B are kept in a closed chamber where the air is maintained at pressure 8N//m^2.The radii of bubbles A and B are 2cm and 4cm, respectively. Surface tension of the soap-water used to make bubbles is 0.04N//m. Find tha ratio n_B//n_A, where n_A and n_B are the number of moles of air in bubbles A and B, respectively. [Neglect the effect of gravity.]

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P_(A)=P_(0)+P_(A)=P_(0)+(4T)/R_(A)=16N//m^(2)
P_(B)=P_(0)+(4T)/R_(B)=12N//m^(2)
n_(B)//n_(A)=(P_(B))/(P_(A))((R_(B))/(R_(A)))^(3)=6