Two soap bubbles of radii r_1and r_2 combine to form a bigger bubble under isothermal conditions. The radius of bigger bubble will be

Two soap bubbles of radii r_1and r_2 combine to form a bigger bubble u

1.	Two soap bubbles of radii r_1and r_2 combine to form a bigger bubble under isothermal conditions. The radius of bigger bubble will be
Answer» `(r_1r_2)/( r_2 - r_1)` `SQRT(r_1 r_2)` `r_1 +r_2` `sqrt(r_(1)^(2) +r_(2)^(2))` ANSWER :D