Under isothermal conditions two soap bubbles of radii a and b coalesce to form a single bubble of radius c. If external pressure is P_O, the surface tension is equal to:

Under isothermal conditions two soap bubbles of radii a and b coalesce

1.	Under isothermal conditions two soap bubbles of radii a and b coalesce to form a single bubble of radius c. If external pressure is P_O, the surface tension is equal to:
Answer» `( P_O ( a^(3) + b^(3) -C^(3) ) )/( 4 ( a^(2) + b^(2) + c^(2) )` `( 4 ( a^(3) + b^(3) - c^(3) ))/( ( a^(2) + b^(2) -c^(2) ) )` `(P_0 ( c^(3) - a^(3) - b^(3) ) )/( 4 ( a^(2) + b^(2) - c^(2) ) )` `( P( a^(3) + b^(3) - c^(3) ) )/( (a^(2) - b^(2) -c^(2) ) )` ANSWER :C