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papercollection4NO.MARKING CRITERIAMARKSUB TOTAL4(a) Name component T correctly 1- Thermistor//heat sensitive resistor(b)Underline the words correctly- resistance decreases- I B increases11(c) (i) Correct answer and correct unit 1- 0.08 s(ii) Correct substitution 11-0.08Correct answer and correct unit 1- 12.5 Hz(iii) Sketch the trace correctly 1- Sinusoidal with four complete cycles 75(a) (i) Compare the speed of light correctly 1- Speed of light is higher in air(ii) Compare the speed of light correctly 1- Speed of light is higher in air(iii) State the relationship correctly 1- If the speed of light decreases, then the light ray will bendtowards the normal(iv) State the phenomenon correctly 1- refraction(b) (i) Draw the light rays correctly- At least one light ray from point P bend away from the normalafter emerging into the air- Extrapolate the ray to point Q11(ii) Correct substitution 11.6-1.2Correct answer with no unit in decimal 1- 1.33 8
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