JEE Main 202227 Jul, Evening shiftPhysicsMediumProperties of Solids and Liquids184× since 2002
A spherical soap bubble of radius 3 cm is formed inside another spherical soap bubble of radius 6 cm. If the internal pressure of the smaller bubble of radius 3 cm in the above system is equal to the internal pressure of the another single soap bubble of radius r cm. The value of r is ___________.