A soap bubble of surface tens ... | Surface Tension | JEE Main 2026

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JEE MAIN 2026

24-1-2026 S2

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A soap bubble of surface tension $0.04 \mathrm{~N} / \mathrm{m}$ is blown to a diameter of 7 cm . If $(15000-x) \mu \mathrm{J}$ of work is done in blowing it further to make its diameter 14 cm , then the value of x is $\_\_\_\_$ $(\pi=22 / 7)$

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