Two soap bubbles of radii 4 cm and 5 cm coalesce to form a common surface. The radius of curvature of this common surface will be

Two soap bubbles of radii 4 cm and 5 cm coalesce to form a common surf

1.	Two soap bubbles of radii 4 cm and 5 cm coalesce to form a common surface. The radius of curvature of this common surface will be
Answer» 20 CM 1m 1.25 cm `sqrt(41) ` cm Answer :A