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Two soap bubbles of radii a and b coales...

Two soap bubbles of radii `a` and `b` coalesce to form a single bubble of radius `c`. If the external pressure is `P`, find the surface tension of the soap solution.

A

`(P ( c^(3) + a^(3) + b^(3)))/( 4( a^(2) + b^(2) - c^(2)))`

B

`(P ( c^(3) - a^(3) - b^(3)))/( 4( a^(2) + b^(2) - c^(2)))`

C

`Pc^(3) - 4a^(2) - 4b^(2)`

D

`Pc^(2) - 2a^(2) - 3b^(2)`

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MOTION-SURFACE TENSION & VISCOSITY -Exercise - 1 Objective Problems | JEE Main
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