Answer :
The height to which a liquid will rise in a capillary tube is given by the equation h = 2y*cos(a) / (p*g*r), where 'y' is the surface tension, 'a' is the contact angle, 'p' is the density, 'g' is the gravity, and 'r' is the tube's radius.
The height (h) to which a liquid will rise in a capillary tube can be found using the equation:
h = 2y*cos(a) / (pg*r)
Here, y is the surface tension of the fluid, a is the contact angle of the liquid-gas interface on the wall of the tube, p is the fluid density, g is the acceleration due to gravity, and r is the radius of the capillary tube (half of the inner diameter). For water at 25
°C in a glass tube, with given values of surface tension T = 71.99 mN/m and density
p = 1.0 g/cm³, we can use these to calculate the capillary rise.
To illustrate, if water rises to a height of 8.4 cm in a glass capillary tube, the equation can be rearranged to solve for the capillary tube diameter.
