Test Academy | The pressure of air in a soap bubble of 0.7cm diameter is 8mm of water above the pressure outside. The surface tension of the soap solution is 100 dyne/cm, 68.66 dyne/cm, 137 dyne/cm, 150 dyne/cm

Question

The pressure of air in a soap bubble of 0.7cm diameter is 8mm of water above the pressure outside. The surface tension of the soap solution is

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