Weakness and Remedies
The following were observed as the candidates’ weaknesses:
- poor understanding of formulaes and definitions;
- inability to give applications of LASERS correctly;
- inability to distinguish correctly the difference between intrinsic and extrinsic semiconductors;
- inability to handle dimension of quantities;
- poor knowledge of blackbody, perfect black body concept;
- poor knowledge of relative humidity, effects of expansion of water and heat transfer;
- inability to apply physics principles in explaining the dent of tightly closed container when it is brought out to cool;
- inability to sketch displacement-time graph of a plane progressive wave, and the resultant wave for two given plane progressive wave y1 and y2;
- poor handling of calculations on resistivity, capacitance and electric field intensity.
Based on the observed weaknesses, the Chief Examiners recommended as follows:
- qualified physics teachers only, should be considered;
- use of marking schemes should be encouraged;
- students should be encouraged on the right approach in solving Mathematical related problems;
- candidates should practice exercises from recommended textbooks.
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