The pressure of air in a soap bubble of 0.7cm diameter is 8 mm of wate – McqOptions

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1.	The pressure of air in a soap bubble of 0.7cm diameter is 8 mm of water above the pressure outside. The surface tension of the soap solution is [MP PET 1991; MP PMT 1997]
A.	\[100dyne/cm\]
B.	\[68.66dyne/cm\]
C.	\[137dyne/cm\]
D.	\[150dyne/cm\]
Answer» C. \[137dyne/cm\]

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