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2. List three methods for the polarization of light.

3. List three situations in which polarized glasses are used.

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4. (a) State two differences between solid friction and viscosity of air.

5. Explain how the addition of detergents of water reduces surface tension

6. (a) Define tensile strain.
(b) Name one measuring instrument which operates on the principle of Hooke's law.
(c) Which property of an elastic material does the constant of proportionality K
represent in the
equation F = Ke?

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7. Use a labelled diagram to illustrate how cathode rays are deflected by a magnet.

8. In electroplating an iron spoon with gold, state which material is made the
(a) Anode;
(b) Cathode;
(c) Electrolyte

9. List the three components of the electron gun' in a cathode ray tube

10. List three phenomena that illustrate the particle nature of light.

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