CAPE Physics Unit 2 · 2008 (Rest of Region) · Paper 1

44 multiple-choice items from this paper. Open one to see it in full, then practise it on Quelpr and get it marked against the mark scheme.

1. Q11 mark · multiple choiceThe resistors in Figure 1 can be replaced by one resistor as shown in Figure 2. What is the resistance of R_T?
2. Q21 mark · multiple choiceWhich row BEST corresponds to the graphs above?
3. Q31 mark · multiple choiceA torch bulb uses a 3\text{ V} supply and takes a current of 0.2\text{ A}. It is switched on for one minute. How much electrical energy is used?
4. Q41 mark · multiple choiceA battery of e.m.f. 1.5\text{ V} has a terminal potential difference of 1.25\text{ V} when a resistor of 25\ \Omega is joined to it. The internal resistance of the battery is
5. Q51 mark · multiple choiceWhat is the value of Resistor X in the above Wheatstone bridge when the galvanometer reads zero?
6. Q61 mark · multiple choiceWhich of the following is a unit of permittivity?
7. Q71 mark · multiple choiceAn oil drop of mass 2 \times 10^{-14}\text{ kg} carries a charge Q. If the drop is stationary between two parallel plates 20\text{ mm} apart with a potential difference of 500\text{ V} between them, then the…
8. Q81 mark · multiple choiceA small positive charge is placed near a plate that is earthed. Which diagram shows the correct direction of the electric field?
9. Q91 mark · multiple choiceA storage capacitor on a computer memory chip has a capacitance of 65 \times 10^{-15}\text{ F}. The capacitor is charged to 5.0\text{ V}. How much energy is stored on the capacitor?
10. Q101 mark · multiple choiceWhich of the following equations is correct?
11. Q121 mark · multiple choiceWhich of the following sketches correctly shows the magnetic field due to the flat circular coil carrying a current in the direction shown?
12. Q131 mark · multiple choiceA current flows in a conductor from East to West. The direction of the magnetic field at a point above the conductor is
13. Q141 mark · multiple choiceWhat will be the approximate ratio of the paths r_p : r_e where r_p and r_e are the radius of the path of the proton and electron respectively?
14. Q151 mark · multiple choiceWhy does a transformer have a core made of iron?
15. Q161 mark · multiple choiceWhich of the following graphs shows how the current varies with time for the circuit shown above?
16. Q171 mark · multiple choiceWhich of the following represents a possible direction of current flow for the bridge rectifier?
17. Q181 mark · multiple choiceIf the equation of an a.c voltage is V = 200 \sin 50\pi t, then the r.m.s. value of the voltage is
18. Q191 mark · multiple choiceWhen a battery is connected across it in the forward bias direction, the depletion layer
19. Q201 mark · multiple choiceThe diagram above represents
20. Q211 mark · multiple choiceIn the circuit above, the value of V_o is
21. Q221 mark · multiple choiceWhat is the gain of the amplifier shown above?
22. Q231 mark · multiple choiceThe bandwidth associated with a gain of 400 is
23. Q241 mark · multiple choiceWhich of the following represents the digital signal?
24. Q251 mark · multiple choiceThe signal below shows the input to two T-type bistables in series which are triggered by a downward pulse. The correct sequence for outputs X and Y is
25. Q261 mark · multiple choiceWhen the thermistor in the potential divider is cold its resistance is 1.0\text{ k}\Omega. As its temperature rises, its resistance decreases and potential at P changes from
26. Q271 mark · multiple choiceIf the inputs at P, Q and R in the combination above are all at logic 1, what are the logic states of X, Y and Z?
27. Q281 mark · multiple choiceThe correct truth table for component X is
28. Q291 mark · multiple choiceIf the inputs to P and Q are both held at logic 1 then the states of R, S and T are
29. Q301 mark · multiple choiceThe symbol for the logic gate which has the equivalent action to this complete circuit is
30. Q311 mark · multiple choiceLight falls on a photoelectric material and no electrons are emitted. Which of the following quantities when increased will cause electrons to be emitted? I. Intensity of the light II. Frequency of the light III.…
31. Q321 mark · multiple choiceWhich scientist proposed a quantum theory to explain the photoelectric effect?
32. Q331 mark · multiple choiceCompared to a 10\text{ eV} photon, a 2\text{ eV} photon has a
33. Q341 mark · multiple choiceAn aluminium surface having a work function of 6.7 \times 10^{-19}\text{ J} is illuminated with radiation of wavelength 250\text{ nm}. Calculate the maximum kinetic energy of the emitted photoelectrons.
34. Q351 mark · multiple choiceThe DeBroglie equation is
35. Q361 mark · multiple choiceA student attempts to determine the linear absorption coefficient \mu of an X-ray absorber. The incident radiation at the surface is 64\text{ counts per second} and the transmitted radiation after passing through…
36. Q371 mark · multiple choiceWhich statement about the behaviour of the oil drops during the experiment is correct?
37. Q381 mark · multiple choiceAn early experiment, working in other than SI units, obtained the following series of values for the magnitudes of the charges on minute oil drops: 19.64 \quad 39.28 \quad 09.82 \quad 39.28 \quad 34.37 \quad 19.64…
38. Q391 mark · multiple choiceAfter Millikan performed his oil drop experiment, he concluded that
39. Q401 mark · multiple choiceWhat is the value of the integer x?
40. Q411 mark · multiple choiceThe energy released in this process is 2.8 \times 10^{-11}\text{ J}. What change of mass occurs in this reaction?
41. Q421 mark · multiple choiceA radioactive element has a half life period of 1600\text{ years}. After 6400\text{ years}, what fraction of a sample of this element will remain?
42. Q431 mark · multiple choiceA radioactive nucleus is represented by ^{227}_{85}\text{X}. It emits an \alpha-particle and a \gamma ray to form a different nucleus of element Y. Which of the following represents the new nucleus?
43. Q441 mark · multiple choiceThe energy required for an electron to move from the ground state and leave the atom would be
44. Q451 mark · multiple choiceA uranium nucleus ^{238}_{92}\text{U} decays by a series of emissions into ^{222}_{86}\text{Rn}. Which of the following emissions could have occurred during the series of decay from uranium-238 to radon-222?