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The excess pressure inside a spherical s...

The excess pressure inside a spherical soap bubble of radius `1cm` is balanced by a column of oil ( specific gravity=`0.8`),`2mm` high, the surface tension of the bubble is
(A) `3.92N/m`
(B) `0.0392N/m`
(C) `0.392N/m`
(D) `0.00392N/m`

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