Answer :
The formula for surface tension in a capillary tube involves surface tension, contact angle, height, tube radius, liquid density, and gravity.
Surface tension (T) of a liquid rising in a capillary tube can be expressed using the formula 2T cos θ h = rpg, where T is the surface tension, θ is the contact angle, h is the height of the liquid, r is the radius of the capillary tube, p is the density of the liquid, and g is the acceleration due to gravity.