The surface tension of soap solution is \[25\times {{10}^{-3}}\,N{{m}^ – McqOptions

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1.	The surface tension of soap solution is \[25\times {{10}^{-3}}\,N{{m}^{-1}}\]. The excess pressure inside a soap bubble of diameter 1 cm is [AIIMS 1987]
A.	10 Pa
B.	20 Pa
C.	5 Pa
D.	None of the above
Answer» C. 5 Pa

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