If the excess pressure inside a soap bubble is balanced by oil column – McqOptions

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1.	If the excess pressure inside a soap bubble is balanced by oil column of height 2 mm, then the surface tension of soap solution will be (r = 1 cm and density d = 0.8 gm/cc) [J & K CET 2004]
A.	3.9 N/m
B.	\[3.9\text{ }\times {{10}^{2}}N/m\]
C.	\[3.9\text{ }\times {{10}^{3}}N/m\]
D.	3.9 dyne/m
Answer» C. \[3.9\text{ }\times {{10}^{3}}N/m\]

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