Physics Past Questions and Answers

(a) What is surface tension?
(b) State two methods by which the surface tension of a liquid can be reduced.

(a) Explain diffusion
(b) State one factor that can affect the rate of diffusion.

(a) List two types of waves, apart from light, that can be plane polarized.
(b) State two applications of plane polarized light.

Explain the rise of water in a glass capillary tube using the kinetic theory.

(a) Explain the term electrolyte and give two examples.
(b) State the relationship between the mass of a substance liberated during electrolysis and the charge passed.