Q4 of 39 Page 300

The contact angle between a solid and a liquid is a property of

The contact angle only depends on the materials of contact but not on the geometrical configuration of the material or its mass. Hence, both option (A) and (B) is true while (C) and (D).

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


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