CSEC Physics · May/June 2007 · Paper 2

34 questions and parts from this paper. Open one to see it in full, then practise it on Quelpr and get it marked against the mark scheme.

1. 1(a)6 marksWith the aid of a diagram, describe a method that the student could have used to obtain her results.
2. 1(b)9 marksPlot a graph of volume, V, (y-axis) against temperature, T, (x-axis). The axes have been drawn for you. The scale for the x-axis should include the range -300°C to +300°C, with 50 °C per division. Label the graph line…
3. 1(c)2 marksFrom the graph determine V₁, the volume of the gas at -120 °C.
4. 1(d)2 marksAt what temperature is the volume 2V₁?
5. 1(e)4 marksDetermine the slope, S, of the graph. Include its units.
6. 1(f)3 marksFrom your graph read off the temperature, T₀, at which the volume would be zero. Explain the significance of T₀.
7. 1(g)2 marksThe equation of the graph line is V = mT + C. Write down the values of m and C.
8. 1(h)2 marksThe pressure on the gas is doubled and the experiment repeated. Draw, on the same set of axes, the line that would be obtained if the experiment is repeated at this higher pressure. Label this line "Line 2".
9. 2(a)3 marksExplain what is meant by the terms 'velocity' and 'acceleration'.
10. 2(b)(i)2 marksCalculate the reaction time of the driver.
11. 2(b)(ii)3 marksThe car takes 3.6 s to travel from B to C. In the space below, draw a velocity-time graph to represent the motion of the car between A and C.
12. 2(b)(iii)3 marksWhat is the average speed of the car between B and C?
13. 2(b)(iv)5 marksIf the mass of the car is 750 kg, find the braking force that slows the car between B and C.
14. 3(a)(i)1 markBy what process is heat transferred to the water through the kettle?
15. 3(a)(ii)1 markExplain why kettles are usually shiny on the outside.
16. 3(a)(iii)2 marksHow does the cover prevent heat losses?
17. 3(b)2 marksOnly about one-third of the thermal energy generated by burning the gas goes into heating the water, whilst the remainder is wasted. State where the wasted energy goes and give the process by which this wasted heat is…
18. 3(c)3 marksIf the mass of water in the kettle is 1.5 kg, calculate the thermal energy required to raise its temperature from 30 °C to 100 °C.
19. 3(d)3 marksHow much more energy must the water absorb for 0.2 kg of it to boil off?
20. 3(e)2 marksExplain why it is better not to fill the kettle when making one or two cups of tea.
21. 4(a)2 marksState what these theories considered light to be.
22. 4(b)4 marksIndicate, by ticking the relevant boxes, the properties which these theories can explain. Place an X in the box if the theory CANNOT satisfactorily explain the property.
23. 4(c)(i)2 marksWhat is meant by 'total internal reflection' at point C?
24. 4(c)(ii)1 markIs the refractive index of the cladding greater or smaller than that of the core?
25. 4(c)(iii)1 markDraw on Figure 3, the ray that shows the path of the light continuing on from C.
26. 4(c)(iv)3 marksCalculate the angle of incidence of the light entering the fibre.
27. 4(c)(v)3 marksGiven that the speed of light in air is 3 x 10⁸ m s⁻¹, determine the speed of light in the core of the fibre.
28. 5(a)(i)2 marksShow, on the diagram above, the charge distribution on the paper.
29. 5(a)(ii)2 marksExplain why there is a net force of attraction.
30. 5(a)(iii)1 markDraw, on Figure 5 above, the charge distribution on the paper when it is in contact with the polythene strip.
31. 5(a)(iv)2 marksState whether the paper gains or loses charge and the type of charge transferred, when it touches the strip.
32. 5(b)(i)2 marksDraw, on Figure 6 above, electric field lines between the cloud and the earth.
33. 5(b)(ii)2 marksDescribe a precaution which may be taken to protect a building against lightning.
34. 5(c)3 marksDuring a certain lightning strike, a current of 5 x 10⁴ A flows for a time period of 0.15 ms. Calculate the quantity of charge that flows from cloud to earth during the strike.