Explanation

(c) If the length of the tube$\ h'$ is less than $h,$ is found that the liquid dose not overflow. In a tube of insufficient length, the liquid rises upto the top of the tube and increases the radius of curvature, of its mentiscus to a value $R$ ,so that
$R^{'}h^{'} = Rh$
[image:10_image101.jpeg]
ie, smaller the length $(h')$ of the tube, greater will be the radius of curvature $(R')$ of the meniscus, but the liquid will never overflow.