waecE-LEARNING
Physics Paper 2, May/June. 2011  
Questions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Main
General Comments
Weakness/Remedies
Strength
Question 7

State three methods of polarizing an unpolarized light.

Observation

Many candidates got the answers right.  However, a few of them only mentioned ‘refraction’ to lose a mark.
Generally, performance was above average.
The expected answers is
Methods of Polarizing an unpolarized light
-     polaroid
-     reflection (from smooth surface)
-     scattering (by small particles)
-     double refraction (through crystals)
-     selective absorption (in certain crystals)

 

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