A bubble having surface tension T and radius R is formed on a ring of radius `b(b lt lt R)`. Air is blown inside the tube with velocity v as shown. The air molecule collides perpendicularly with the wall of the bubble and stops. Calculate the radius at which the bubble separates from the ring.

A bubble having surface tension T and radius R is formed on a ring of radius b (b lt gt R) . Air is blown inside the tube held in front of the ring , with velocity upsilon as shown in fig. The air molecules collides perpendicularly with the wall of the bubble and stops. Calculate the radius R at which the bubble and stops. Calculate the radius R at which the bubble separates from the ring.

The surface tension of soap is T . The work done in blowing a soap bubble of radius 3 R to that of a radius 5R is

The surface tension of soap is T . The work done in blowing a soap bubble of radius 3 R to that of a radius 5R is

Two air bubbles with radius r are present in water. Are these bubbles attracted or repelled?

A spherical air bubble of radius r is formed in water. If T be the surface tension of water, the excess pressure inside the bubble is