A glass tube of 1mm diameter is dipped vertically into a tube of mercury, with its lower end 3 cmm
Channel: Doubtnut
Date: 2020-08-23

A glass tube of 1mm diameter is dipped vertically into a tube of mercury, with its lower end 3 cmm below the mercury surface. What must be the gauge pressure of air in the tube to blow a hemispherical bubble at its lower and ? Given, density of mercury `= 13.6 g//c c` and surface tension of mercury `= 0.540 Nm^(-1). g =10 ms^(-2).`