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Physics Paper 2, MAy/June. 2010  
Questions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Main
General Comments
Weakness/Remedies
Strength
Question 5

(a) Differentiate between plane polarization and interference as applied to waves.
(b) List two uses of polaroids.

_____________________________________________________________________________________________________
Observation

Many candidates failed to give acceptable distinction between plane polarization and interference as applied to waves. However, listing of two uses ofpolaroids posed no problem to them.

The expected answers are:
(a) Any 2 correct pair
e.g.

(b) Any two correct uses of polaroids 2 x 1/2 mark
e.g They are used in:
production of 3-dimentional films
determination of concentration of sugar solution
polaroid cameras
sun glasses.
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