Question

The lower end of a capillary tube of diameter 2 mm

Answer 1

Answer:

The lower end of a capillary tube of diameter 2 mm is dipped in water 8cm below the surface in a beaker so that an air bubble is formed at the end of the tube inside water.

Answer 2

Answer:

excess pressure of hemisphere =2role/R

=2×7.3×10-2/1.01×105

=2×7.3×1-2×104

=14.6×102 pa

normal pressure =1.01784×105 pa

p+excess pressure =103244