(a) What is surface tension?
(b) State two methods by which the surface tension of a liquid can be reduced.
Verified Correct Answer: .
Physical Principles & Numerical Solution
(a) Surface tension is the force per unit length acting at right angle to one of a line drawn in the surface.
(b) By adding detergents, soap or oil. By heating the liquid.
Source: Myschool Past Questions Archive (Record #54660)