A bubble having surface tension T and radius R is formed on a ring of radius b `(b lt gt R)` . Air
Channel: Doubtnut
Date: 2020-08-02

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.