The surface tension in a soap bubble of 50 mm diameter with inside pre – McqOptions

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1.	The surface tension in a soap bubble of 50 mm diameter with inside pressure being 2.5 N/m2 above the atmospheric pressure is
A.	0.0125 N/m
B.	0.0156 N/m
C.	0.2 N/m
D.	0.312 N/m
Answer» C. 0.2 N/m

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