CAPE Physics Unit 1 · 2008 · Paper 2

30 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)6 marksUse the data to plot a suitable straight line graph (on page 5) to determine the value of, g, the acceleration of free fall.
2. 1(a) Working3 marksWorking for determination of g.
3. 1(b)3 marksOn the axes below sketch graphs (using down as positive) to show how the acceleration, a, velocity, v, and displacement, y, of the falling steel bearing vary with time.
4. 1(c)3 marksUsing g = 9.8 m s⁻² rather than the value from (a), find the velocity of the steel bearing after it has fallen a distance of 0.90 m.
5. 2(a)(i)1 markWhat is meant by the term 'diffraction'?
6. 2(a)(ii)2 marksShow on the diagram, the resulting waves after passage through the slits.
7. 2(a)(iii)2 marksMark on Figure 1, TWO places where constructive interference occurs and TWO places where destructive interference occurs. (Use a circle O for constructive interference and an X for destructive interference.)
8. 2(a)(iv)2 marksIn the space below draw wave diagrams to show how TWO waves could superpose to produce constructive and destructive interference.
9. 2(b)(i)5 marksCalculate the value of θ.
10. 2(b)(ii)1 markExplain why at Q, a point midway between P and R, the signal received is very weak.
11. 2(b)(iii)2 marksAt what angle to the mid-line would the next minimum of the interference pattern occur?
12. 3(a)(i)1 markExplain what is meant by EACH of the following terms. 'Stress': 'Strain':
13. 3(a)(ii)1 markMark on the graph the region where the wire obeys Hooke's law.
14. 3(a)(iii)2 marksIn the space below, sketch graphs to show how the graph in Figure 3 will change if the material is (a) Glass (b) Rubber
15. 3(b)(i)2 marksOn Figure 4 show the forces acting on the mass.
16. 3(b)(ii)a)2 marksAt the LOWEST point, calculate the tension in the wire.
17. 3(b)(ii)b)2 marksAt the LOWEST point, calculate the stress experienced by the wire.
18. 3(b)(ii)c)3 marksAt the LOWEST point, calculate the extension of the wire.
19. 3(c)1 markExplain whether or not the wire breaks at this point.
20. 4(a)3 marksDescribe how the diameter of the wire could be measured accurately.
21. 4(b)4 marksDiscuss, using examples, the difference between precision and accuracy in physical measurement.
22. 4(c)8 marksUse this data to find the specific latent heat of the liquid, together with its uncertainty, and write the answer in the form L = (x ± y) x 10⁶ J kg⁻¹, using an appropriate number of significant figures.
23. 5(a)3 marksWith the aid of a diagram, explain what happens to the waves. What is this phenomenon called?
24. 5(b)(i)2 marksBy how much does the frequency decrease when the wavelength is changed from 3 mm to 8 mm?
25. 5(b)(ii)10 marksa) Take readings from the graph and draw a suitable table of values. b) Using the graph paper provided on the insert, plot a straight line graph to test the relationship. c) Use your graph to determine the value of k.
26. 6(a)(i)1 markWrite a formula relating P to the inside and outside temperatures of the material, θ₁ and θ₂, and the thickness, x.
27. 6(a)(ii)5 marksUse the graph to find the rate of flow of thermal energy when x = 2.5 cm and when x = 4.5 cm.
28. 6(a)(iii)3 marksUse the gradient of the graph to find the thermal conductivity of the material.
29. 6(a)(iv)2 marksSketch the graph which would have been obtained if P were plotted against x instead of 1/x.
30. 6(b)4 marksEstimate the net rate of heat loss from his body after just entering the room.