CAPE Physics Unit 2 · 2019 · Paper 1

40 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 choiceItem 1 refers to the following circuit diagram. If all the resistors have equal resistance, R, what is the effective resistance between AB?
2. Q21 mark · multiple choiceThe unit for resistivity is
3. Q41 mark · multiple choiceGiven that a wire of length, L, and area, A, has resistance, R, what is the resistance of a wire of similar material which is twice the length and half the diameter?
4. Q51 mark · multiple choiceA beta particle passes a point 100\text{ nm} away from an alpha particle. What is the magnitude of the electrostatic force between the particles at that point?
5. 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. A voltmeter of infinite resistance is connected in parallel…
6. Q71 mark · multiple choiceWhat is the electric potential 25\text{ cm} from a point charge of 6 \times 10^{-8}\text{ C}?
7. Q81 mark · multiple choiceThe energy stored in a capacitor is given by
8. Q91 mark · multiple choiceWhich of the following diagrams shows the MOST likely path a neutron will follow if projected parallel to and into the space between two charged plates?
9. Q101 mark · multiple choiceWhat is the magnetic flux density at the centre of a long solenoid, given that the number of turns per unit length is 12\text{ turns per centimetre} and the current passing is 3\text{ A}? (Assume…
10. 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
11. Q141 mark · multiple choiceWhich of the following diagrams correctly illustrates the magnetic flux pattern due to a current in a solenoid?
12. Q151 mark · multiple choiceItem 15 refers to the following circuit diagram. A thermistor is used in the circuit as shown in the diagram above. It is found that there is a current of 80\text{ mA} from the supply. What is the current through the…
13. Q161 mark · multiple choiceWhich of the following diagrams represents a step-down transformer?
14. Q171 mark · multiple choiceItem 17 refers to the following diagram. The potential divider in the diagram is formed from a light dependent resistor (LDR) and a resistor, R. The LDR has a resistance of 5000\ \Omega in the dark and 50\ \Omega…
15. Q181 mark · multiple choiceA sinusoidal signal has a peak voltage of 5.0\text{ V}. What is the root mean square value of this signal?
16. Q191 mark · multiple choiceItem 19 refers to the following op-amp voltage comparator. The supply voltage to the op-amp is \pm 9\text{ V}. If the open loop gain is 10^5, and V_2 = 0, what is the maximum input voltage swing, V_1, for…
17. Q201 mark · multiple choiceThe sinusoidal alternating voltage shown in Diagram 2 is applied to the input of the operational amplifier shown in Diagram 1. The voltage of the power supply is \pm 15\text{ V}. Which of the following graphs…
18. Q211 mark · multiple choiceItem 21 refers to the following diagram where V_1 and V_2 are input signals. What are the possible values of R_1, R_2 and R_3 if the output voltage V_{\text{out}} = -(3V_1 + 4V_2)?
19. Q221 mark · multiple choiceItem 22 refers to the following diagram which shows the output voltage across the load in a bridge rectifier. Which of the following can be done to produce a steadier d.c. voltage across the load shown above?
20. Q231 mark · multiple choiceWhich of the following graphs BEST represents the open loop gain frequency response of a real operational amplifier?
21. Q241 mark · multiple choiceItem 24 refers to the following diagram which shows an amplifier. The values for the resistors may be changed. Which of the following pairs of values for R_1 and R_2 would give the amplifier the LARGEST bandwidth?
22. Q261 mark · multiple choiceItem 26 refers to the following circuit diagram. What is the output voltage, V_{\text{out}}, of the op-amp in terms of V_1, V_2 and V_3?
23. Q271 mark · multiple choiceItem 27 refers to the following circuit diagram. In the diagram above, the current, I, flowing through the n-type semiconductor is mainly due to
24. Q281 mark · multiple choiceItem 28 refers to the following diagram which shows a combination of NOR gates. Which single gate is the same as this network?
25. Q291 mark · multiple choiceItems 29–30 refer to the following diagram. If the inputs to P and Q are both held at logic 1, then the states of R, S and T are
26. Q311 mark · multiple choiceEach of the following particles is moving at 0.2\ c, where c is the speed of electromagnetic radiation. Which particle has the LONGEST de Broglie wavelength associated with it?
27. Q321 mark · multiple choiceWhich of the following statement(s) is/are true about the wave–particle duality? I. The photoelectric effect is evidence that electromagnetic radiation has a particulate nature. II. Interference is evidence that…
28. Q331 mark · multiple choiceWhat is the linear absorption coefficient of a material of thickness 10\text{ cm} that reduces the incident X-ray intensity to half of its original value?
29. Q341 mark · multiple choiceThe equation which represents the radioactive change of a ^{60}_{27}\text{Co} nucleus by \beta^- emission is
30. 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 m}^{-1}. The charge of the drop is
31. Q361 mark · multiple choiceWhat is the de Broglie wavelength of an Olympic sprinter of mass 60\text{ kg} when running at a speed of 10\text{ m s}^{-1}?
32. Q371 mark · multiple choiceThe photon model shows that the number of photons per unit time per unit area is proportional to the
33. Q381 mark · multiple choiceIn medicine, radioactive isotopes are often used as tracers to assist in locating blockages in the human body. Which of the following isotopes would be MOST suitable for such an application? \begin{tabular}{|c|c|c|}…
34. 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
35. Q401 mark · multiple choiceUranium-238, ^{238}_{92}\text{U}, decays by one alpha particle and one beta particle. What is the resulting nuclide?
36. 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} \longrightarrow…
37. Q421 mark · multiple choiceThe mass of a nucleus is always less than the total mass of its constituent nucleons. This difference in mass is usually released as energy in the form of
38. Q431 mark · multiple choiceThe following equation shows the disintegration of Polonium-210 to a stable isotope of lead. ^{210}_{84}\text{Po} \longrightarrow \ ^{206}_{82}\text{Pb} + \ ^{4}_{2}\text{He} + Q For the above equation, the mass of…
39. Q441 mark · multiple choiceWhat is the half-life for a radioactive isotope containing 1020 atoms with a decay constant of 1.60 \times 10^{-5}\text{ hour}^{-1}?
40. Q451 mark · multiple choiceThe activity of a radioactive isotope is found to fall to 1/16 of its initial value in 2 hours. What is the half-life of the isotope?