CAPE Physics Unit 2 · 2017 · Paper 1

41 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 choiceWhen a potential difference of 2\text{ V} is applied across a resistor, 10\text{ J} of energy are converted to thermal energy. What charge flows through the resistor?
2. Q21 mark · multiple choiceItem 2 refers to the following diagram. [Diagram of a cylindrical conductor of length l, cross-sectional area A, with electrons moving inside] The conductor shown above has n free electrons per unit volume, each…
3. Q31 mark · multiple choiceWhich of the following graphs represents the correct relationship between voltage and current for a practical silicon p-n junction diode?
4. Q41 mark · multiple choiceItem 4 refers to the following circuit diagram. [Circuit diagram showing a resistor R in series with three parallel resistors of resistance R between points A and B] If all the resistors have equal resistance, R,…
5. Q51 mark · multiple choiceItem 5 refers to the following circuit diagram which compares an unknown resistance, X, with known resistances, P, Q and R. [Circuit diagram of a Wheatstone bridge with resistors X, R, P, Q and a galvanometer]…
6. Q61 mark · multiple choiceItem 6 refers to the following circuit diagram in which a cell of e.m.f., E, and internal resistance, r, is connected to a resistor of resistance, R. [Circuit diagram showing a cell with internal resistance, in…
7. Q71 mark · multiple choiceWhat is the electric potential 25\text{ cm} from a point charge of 6 \times 10^{-8}\text{ C}?
8. Q81 mark · multiple choiceThe energy stored in a capacitor is given by
9. Q101 mark · multiple choiceItem 10 refers to the following diagram of a wire of length 30\text{ cm} in a magnetic field of strength 3.5\text{ mT}, which makes an angle of 60^\circ with the field. [Diagram showing magnetic field B and a wire…
10. Q111 mark · multiple choiceAn ideal transformer has 600 turns in the primary winding and 40 turns in the secondary winding. If the current in the primary winding is 5\text{ A}, and the primary voltage is 120\text{ V}, what is the current…
11. Q121 mark · multiple choiceThe mathematical equation for the discharge of a capacitor, C, through a resistor, R, is given by Q = Q_0 e^{-\left(\frac{t}{RC}\right)} The value of RC is called the
12. Q131 mark · multiple choiceA straight wire 1\text{ m} long is placed at an angle of 30^\circ in a magnetic field of flux density 0.2\text{ T}. It experiences a force of 0.5\text{ N}. What is the current in the wire?
13. Q141 mark · multiple choiceWhich of the following diagrams BEST illustrates the magnetic flux pattern due to a current in a solenoid?
14. Q151 mark · multiple choiceWhich of the following diagrams represents a step-down transformer?
15. Q161 mark · multiple choiceWhat is the r.m.s value of a sinusoidal signal of peak value 3.0\text{ V}?
16. Q171 mark · multiple choiceItem 17 refers to the following diagram of a light-dependent resistor (LDR). [Circuit diagram of an LDR connected in series with a 2\text{ k}\Omega resistor across a 10\text{ V} supply] With the LDR in complete…
17. Q181 mark · multiple choiceItem 18 refers to the following diagram. [Inverting amplifier circuit with input resistor R_i, feedback resistor R_f, and non-inverting input grounded] The gain of this amplifier is given by
18. Q191 mark · multiple choiceItems 19-20 refer to the following op-amp voltage comparator. [Diagram of an op-amp comparator supplied by \pm 9\text{ V}, with inputs V_1 at inverting terminal and V_2 at non-inverting terminal] The supply…
19. Q201 mark · multiple choiceItems 19-20 refer to the following op-amp voltage comparator. [Diagram of an op-amp comparator supplied by \pm 9\text{ V}, with inputs V_1 at inverting terminal and V_2 at non-inverting terminal] If the input…
20. Q221 mark · multiple choiceItem 22 refers to the following diagram which shows the output voltage across the load in a bridge rectifier. [Waveform showing full-wave rectified DC voltage] Which of the following can be done to produce a steadier…
21. Q231 mark · multiple choiceItem 23 refers to the following diagram which shows two inverting operational amplifiers connected together. [Diagram showing cascaded inverting op-amps: stage 1 with 10\text{ k}\Omega input and 50\text{ k}\Omega…
22. Q241 mark · multiple choiceWhat is the effect of negative feedback on the gain and bandwidth of an inverting amplifier?
23. Q251 mark · multiple choiceItem 25 refers to the following diagram. [Diagram showing a p-n junction with a depletion layer connected to a DC cell and switch S in reverse bias] When the switch S is closed, the depletion layer
24. Q261 mark · multiple choiceItem 26 refers to the following diagram of an amplifier circuit. [Circuit diagram of an op-amp comparator driving an LED, with reference voltage V_1 at inverting input and LDR potential divider voltage V_2 at…
25. Q271 mark · multiple choiceWhich of the following diagrams shows the correct circuit for a half adder?
26. Q281 mark · multiple choiceItem 28 refers to the following diagram which shows a combination of NOR gates. [Network of four 2-input NOR gates with inputs A and B and a single output] Which single gate is the same as this network?
27. Q291 mark · multiple choiceItems 29-30 refer to the following diagram. [Logic circuit diagram with inputs P and Q to a NOR gate producing R, an AND gate producing S, and R and S fed into a NOR gate producing T] If the inputs to P and Q are both…
28. Q311 mark · multiple choiceWhich of the following statements correctly describes the photoelectric effect?
29. Q321 mark · multiple choiceItem 32 refers to the following diagram which shows a photocell, consisting of an anode, A, and a cathode, C, inside an evacuated glass tube, connected to an ammeter, voltmeter and a variable d.c. power supply. [Diagram…
30. Q331 mark · multiple choiceBinding energy is equivalent to the mass
31. Q341 mark · multiple choiceThe equation which represents the radioactive change of a ^{60}_{27}\text{Co} nucleus by \beta-emission is
32. Q351 mark · multiple choiceIn Millikan's oil drop experiment, a charged drop of mass 4 \times 10^{-15}\text{ kg} is suspended between the metal plates by an electric field of strength 4.2 \times 10^4\text{ V}\text{ m}^{-1}. The charge of the…
33. Q361 mark · multiple choiceHow much energy would be released in a nuclear fission reaction if the mass defect is 0.00687\text{ u}?
34. Q371 mark · multiple choiceThe photon model shows that the number of photons is proportional to the
35. Q381 mark · multiple choiceWhich of the following scientists suggested that matter had a dual nature and proposed that any particle of a specific momentum had an associated wavelength?
36. Q391 mark · multiple choiceElectromagnetic radiation is incident on a metal surface whose work function is 6.4 \times 10^{-19}\text{ J}. The value of the minimum frequency of radiation which will cause electrons to be emitted is
37. Q401 mark · multiple choiceWhich of the following statements are true about radioactive decay? I. It is a random process. II. It is a spontaneous process. III. It is dependent on the chemical combination of radioactive elements.
38. Q411 mark · multiple choiceItem 41 refers to the following information. In a nuclear reactor, Uranium-235 undergoes fission when it collides with a slow neutron. The reaction is given by ^{235}_{92}\text{U} + {^1_0}\text{n} \rightarrow…
39. Q421 mark · multiple choiceAn electron has kinetic energy of 8 \times 10^{-18}\text{ J}. What is this value in electron volts?
40. Q431 mark · multiple choiceThe following equation shows the disintegration of Polonium-210 to a stable isotope of lead: ^{210}_{84}\text{Po} \rightarrow {^{206}_{82}}\text{Pb} + {^4_2}\text{He} + Q For the above equation, the mass of…
41. Q441 mark · multiple choiceWhat is the half-life for a radioactive isotope containing 10^{20} atoms with a decay constant of 1.60 \times 10^{-5}\text{ s}^{-1}?