CSEC Physics · 1989 · 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)3 marksDraw a circuit diagram for the experiment. Label the primary and secondary windings.
2. 1(b)(i)1 markFind, from the graph, the value of Ip when Is = 1.00 A.
3. 1(b)(ii)4 marksDetermine the slope of the line and hence write an equation relating Is and Ip.
4. 1(b)(iii)3 marksState and explain what you would have expected the equation to be if the transformer had been an ideal one.
5. 1(b)(iv)1 markWhat would have been the value of Ip for the ideal transformer when Is = 1.00 A?
6. 1(c)(i)2 marksDescribe the first of TWO measures you would take in the construction of a transformer to make its behaviour close to that of an ideal one.
7. 1(c)(ii)2 marksDescribe the second of TWO measures you would take in the construction of a transformer to make its behaviour close to that of an ideal one.
8. 2(a)(i)4 marksFind the refractive index of the glass for these waves. Clearly show on the diagram (Figure 2) all measurements made.
9. 2(a)(ii)1 markWhat is the value of the angle of incidence for these wavefronts?
10. 2(b)(i)3 marksCalculate the refractive index of water.
11. 2(b)(ii)5 marksDraw a wavefront diagram to represent this refraction at an air-water boundary. (Your diagram need not be to scale.) Mark on the diagram the size of the angle between the incident wavefronts and the boundary, and also…
12. 2(c)(i)2 marksName the TWO parts of the eye where refraction takes place.
13. 2(c)(ii)1 markExplain why the amount of refraction at one of the two parts is much greater than that at the other.
14. 3(a)4 marksWrite 'YES' or 'NO' in EACH of the boxes below to show whether each system possesses the energy indicated at the top of the column.
15. 3(b)(i)2 marksCalculate the kinetic energy of the moving car.
16. 3(b)(ii)3 marksEach of the four brake drums has a mass of 2.5 kg. Find the rise in temperature which occurs when the car is brought to rest. [Specific heat capacity of iron = 450 J kg^-1 K^-1.]
17. 3(c)(i)3 marksWith reference to Newton's laws of motion explain why this might happen.
18. 3(c)(ii)2 marksWith reference to Newton's laws of motion explain how the wearing of a seat-belt helps to prevent such an accident.
19. 3(d)2 marksA car, carrying a passenger, stops suddenly. Describe the energy changes which take place as the passenger is brought to rest by his seat-belt.
20. 4(a)6 marksComplete the statement by filling in EACH blank space with an appropriate word.
21. 4(b)(i)4 marksCalculate the total distance the girl runs.
22. 4(b)(ii)1 markWhat is her acceleration over the first 20 seconds?
23. 4(b)(iii)1 markWhat is the magnitude of the force that produces this acceleration?
24. 4(b)(iv)2 marksHow does the force in (iii) above arise?
25. 4(c)(i)1 markCalculate the girl's momentum after 10 seconds.
26. 4(c)(ii)1 markCalculate the girl's momentum after 40 seconds.
27. 5(a)3 marksComplete the figure by putting in the polarity of EACH of the magnets, and marking the field direction in the four blank spaces.
28. 5(b)(i)3 marksInsert the magnetic field lines in the arrangement showing a wire placed between N and S poles of a magnet, carrying a conventional current down into the paper.
29. 5(b)(ii)2 marksInsert the magnetic field lines in the arrangement showing a soft iron ring placed between two magnets.
30. 5(c)(i)1 markAn ordinary torch battery is connected to a moving coil loudspeaker. State how the coil will move.
31. 5(c)(ii)1 markWhat would you expect to hear?
32. 5(d)(i)2 marksWhat is the frequency of the sound that is heard?
33. 5(d)(ii)2 marksOn the axes of Figure 7(b) on page 12, draw a graph to show how the applied voltage would vary with time if the sound were louder than that represented in 7(a), but of the same frequency.
34. 5(d)(iii)2 marksOn the axes of Figure 7(c) on page 12, draw another graph to show how the applied voltage would vary with time if the sound were higher in pitch than that represented in Figure 7(a), but of the same loudness.