Question

A liquid rises in a capillary such that the surface tension balances its weight of 5 x

10-3N of liquid, surface tension of liquid is 5 x 10-2Nm-1

. Find the radius of the

capillary.​

Answer 1

Answer:

F=T(2πr)

F/T = circumference

75×10

−4

/6×10

−2

= circumference

circumference = 12.5×10

−2

m