CAPE Physics Unit 2 · 2003 · Paper 1

52 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)1 markDefine the 'Farad'.
2. 1(b)3 marksDerive an expression for the total capacitance, C_T, of three capacitors, C_1, C_2 and C_3, connected in series.
3. 1(c)(i)3 marksCalculate the capacitance of this capacitor.
4. 1(c)(ii)3 marksCalculate the energy stored in this capacitor.
5. 2(a)(i)1 markDefine magnetic flux.
6. 2(a)(ii)1 markDefine the Tesla.
7. 2(b)(i)1 markState Faraday's Law.
8. 2(b)(ii)1 markState Lenz's Law.
9. 2(c)(i)2 marksFind the area of the triangle formed at 2 seconds by the conducting bar and the conducting rods.
10. 2(c)(ii)2 marksFind the magnetic flux through the triangle at 2 seconds.
11. 2(c)(iii)2 marksFind the electromotive force (e.m.f.) induced in the moving rod at 2 seconds.
12. 3(a)1 markWrite an expression for the total resistance, R_T, of three resistors R_1, R_2 and R_3 in parallel.
13. 3(b)1 markState Ohm's Law.
14. 3(c)2 marksExplain the difference between electromotive force (e.m.f.) and the terminal potential difference (p.d.) of a battery.
15. 3(d)6 marksFill in the blank spaces in the table with the missing data.
16. 4(a)(i)1 markExplain what is meant by a P-type semiconductor.
17. 4(a)(ii)1 markExplain what is meant by an N-type semiconductor.
18. 4(a)(iii)1 markExplain what is meant by doping, as applied to semiconductors.
19. 4(a)(iv)1 markExplain what is meant by the depletion region.
20. 4(b)1 markSuggest ONE application of a p-n junction diode.
21. 4(c)(i)a)2 marksCalculate the value of the output voltage, V_0, when V_i = 10 V.
22. 4(c)(i)b)1 markCalculate the value of the output voltage, V_0, when V_i = -10.0 V.
23. 4(c)(ii)2 marksSketch the output when V_i = 10 sin(omega * t), where omega = 100 rad s^-1, including appropriate numerical values on the scales.
24. 5(a)3 marksIn the space provided, sketch a typical gain frequency curve for an operational amplifier.
25. 5(b)1 markWhat is meant by a 'virtual earth' in an operational amplifier circuit?
26. 5(c)1 markState ONE effect of positive feedback in an operational amplifier circuit.
27. 5(d)(i)4 marksCalculate the net gain of the circuit.
28. 5(d)(ii)1 markCalculate the output voltage, V_0, when V_i = 0.01 V.
29. 6(a)(i)2 marksWrite the truth table for a half-adder used to add the 1's column in binary addition.
30. 6(a)(ii)2 marksDraw a circuit diagram to show how an Exclusive-OR (EX-OR) gate and an AND gate can be arranged to design a half adder circuit.
31. 6(b)1 markDraw a circuit diagram to show how NAND gates could be used to build a flip-flop.
32. 6(c)3 marksWrite the truth table for the circuit shown in Figure 6, indicating the output at X, Y and Z.
33. 6(d)2 marksDraw a simple logic circuit to represent the truth table shown in which A and B are inputs and X is the output.
34. 7(a)3 marksState THREE experimental facts about the photoelectric effect which support the particulate (photon) model of light.
35. 7(b)1 markWhen ultraviolet light is incident on an insulated metal plate, the plate emits electrons for a while and then stops. Explain why the process eventually stops.
36. 7(c)(i)1 markDetermine the amount of energy it will take to ionize an electron from the ground state.
37. 7(c)(ii)1 markState what will happen if a 6 eV photon strikes the atom.
38. 7(d)(i)2 marksCalculate the frequency of radiation emitted.
39. 7(d)(ii)1 markCalculate the wavelength of radiation emitted.
40. 7(d)(iii)1 markIn which region of the electromagnetic spectrum would this radiation be found?
41. 8(a)(i)2 marksExplain the principle by which a continuous X-ray spectrum is produced.
42. 8(a)(ii)2 marksWhy is a vacancy in an inner electron shell usually required for an atom to emit an X-ray photon?
43. 8(b)(i)1 markWrite an expression for the emerging intensity, I, in terms of I_0, mu_1 and x_1.
44. 8(ii)a)3 marksShow that the Intensity, I, is given by I = I_0 e^{-(mu_1 x_1 + mu_2 x_2)}.
45. 8(ii)b)2 marksCalculate the value of I where I_0 = 500 W m^-2, mu_1 = 8.0 m^-1, x_1 = 2.0 mm, mu_2 = 4.0 m^-1, x_2 = 4.0 mm.
46. 9(a)(i)1 markExplain what is meant by nuclear fission.
47. 9(a)(ii)1 markExplain what is meant by nuclear fusion.
48. 9(a)(iii)1 markExplain what is meant by binding energy.
49. 9(b)(i)1 markHow many protons are there in the nucleus?
50. 9(b)(ii)1 markHow many neutrons are there in the nucleus?
51. 9(c)(i)4 marksCalculate the energy E, in eV, released during the reaction.
52. 9(c)(ii)1 markCalculate the energy, in eV, of EACH neutron produced in the reaction.