A soap bubble of radius r has a charge +q. Find the surface tension of the soap bubble. Plz tell the ans asap;

Dear Harish,

The pressure difference between the inside and outside of a bubble depends upon the surface tension and the radius of the bubble. The relationship can be obtained by visualizing the bubble as two hemispheres and noting that the internal pressure which tends to push the hemispheres apart is counteracted by the surface tension acting around the cirumference of the circle.

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