CSEC Physics · January 2014 · Paper 2

33 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)7 marksOn page 3, plot a graph of image size, I, versus object size, O.
2. 1(b)5 marksCalculate the gradient, G, of the line obtained.
3. 1(c)1 markState the physical quantity with which the gradient of the graph, G, is associated.
4. 1(d)3 marksDuring the investigation, Keshorn talked with his friend Atiba about the term 'focal length'. Define the term 'focal length'.
5. 1(e)1 markWith what piece of apparatus in physics is the term 'focal length' associated?
6. 1(f)(i)4 marksthe height of the image of the computer
7. 1(f)(ii)4 marksthe magnification of this image.
8. 2(a)(i)3 marksFigure 1 shows some physical quantities and their units. Draw an arrow from EACH quantity to its unit.
9. 2(a)(ii)4 marksComplete Table 2 to show the names of three forces and a situation in which EACH force acts.
10. 2(b)(i)1 markLabel, as W, the point on Figure 2 where the weight of the plank acts.
11. 2(b)(ii)4 marksCalculate the weight of the plank, W.
12. 2(b)(iii)3 marksIf Patrick sat alone on the plank, calculate where he would have to sit in order to maintain his 'magical' balancing act. The pivot remains as before.
13. 3(a)(i)1 markState the physical property that varies with temperature in each of the following thermometers. A laboratory thermometer
14. 3(a)(ii)1 markA thermocouple
15. 3(b)3 marksComplete Table 3 which relates the use of a thermometer to its design.
16. 3(c)(i)2 marksState Charles' Law.
17. 3(c)(ii)8 marksWhat is the percentage increase in volume of the gas if the cylinder is heated until the gas temperature reaches 70°C?
18. 4(a)(i)2 marksState TWO properties of electromagnetic waves.
19. 4(a)(ii)4 marksVisible light is a type of electromagnetic wave. State TWO other types of electromagnetic waves indicating whether the wavelength of each is higher or lower than that of visible light.
20. 4(b)(i)a)3 marksthe frequency in each case
21. 4(b)(i)b)1 markthe decrease in frequency, Δf.
22. 4(b)(ii)1 markWe assume that the useful energy transferred to the solar panel is a constant, k, times the decrease in frequency of the e.m. waves. (E = kΔf). State the corresponding energy transferred, E₁, in terms of k.
23. 4(b)(iii)4 marksWith a change of conditions, the wavelength of the wave now absorbed by the panel increased to 6 × 10⁻⁷ m, but the emitted wavelength remains at λ₂ = 6.5 × 10⁻⁵ m. What fraction of E₁, the original energy transferred,…
24. 5(a)6 marksWith the aid of a diagram, describe an experiment that may be used to investigate the relationship between current, I, and potential difference, V, for a filament lamp. Sketch your expected result.
25. 5(b)(i)5 marksAssuming negligible losses in the connecting wires, calculate the required potential difference of the supply.
26. 5(b)(ii)3 marksCalculate the current in the 5 kΩ resistor.
27. 5(b)(iii)1 markIf the 2 kΩ resistor burns out, what current now flows in the 5 kΩ resistor?
28. 6(a)(i)3 marksWrite the equation representing this decay process.
29. 6(a)(ii)2 marksHow many neutrons are in the ²²⁶₈₆Ra nucleus?
30. 6(b)4 marksExplain why an atom is normally neutral and stable.
31. 6(c)2 marksWhat are 'isotopes'?
32. 6(d)(i)4 marksState the mass number, atomic number and the charge on the nucleus of this atom.
33. 6(d)(ii)1 markWrite the symbol for another possible isotope of X.