Question

A liquid is contained in a vertical tube of semicircular cross-section (figure 14-Q5). The contact angle is zero. The forces of surface tension on the curved part and on the flat part are in ratio

(a) 1 : 1

(b) 1 : 2

(c) π :2

(d) 2:π

Answer 1

The correct answer is
(c) π :2