Two soap bubbles of radius `r_(1)` and `r_(2)` combine. Find radius of curvature of the common surface separating them.

When two soap bubbles of radii r_1 and r_2 ( r_2>r_1 )coalese, the radius of curvature of common surface is

Two soap bubbles of radii r_(1) and r_(2) are attached as shown. Find the radius of curvature of the common film ACB.

When two soap bubbles of radius r_(1) and r_(2)(r_(2) gt r_(1)) coalesce, the radius of curvature of common surface is

Two soap bubbles each of radius r are touching each other. The radius of curvature of the common surface will be:

Two soap bubbles each of radius r are touching each other. The radius of curvature of the common surface will be:

When two soap bubbles of radii a and b ( b gt a ) coalesce, the radius of curvature of common surface is :

When two soap bubbles of radii r_1 and r_2 (r_2 > r_1) are in contact, the radius of curvature of common surface is

A spherical soap bubble of radius 2 cm attached to the outside of a spherical bubble of radius 4 cm. Find the radius of curvature of the common surface.