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Question

There is a small air bubble of radius r at bottom of a tube of radius R filled with a liquid as shown in the figure. The liquid column in the tube is h and surface tension of liquid is T. The pressure inside air bubble is (consider r <<h) and atmospheric pressure as Po.
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A
Po+hρg
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B
Po+hρg+2Tr
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C
Po+hρg+2T[1R+1r]
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D
Po+hρg+2T(RrRr)
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