CSEC Physics · May/June 2018 · Paper 2

31 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 marksComplete Table 1 to show values for 1/u and 1/v. [Include units and calculate to three significant figures.]
2. 1(b)7 marksOn the grid provided on page 5, plot a graph of 1/v against 1/u.
3. 1(c)(i)4 marksCalculate the gradient of the graph in (b) to one significant figure.
4. 1(c)(ii)1 markState the value of the intercept, c, on the 1/u axis.
5. 1(d)4 marksGiven that c = 1/f, determine f, the focal length of the lens.
6. 1(e)3 marksComplete Figure 2 to show the paths of rays 1, 2 and 3 as they pass through the convex lens represented by the dotted line.
7. 2(a)(i)3 marksComplete the following table to show the charge of EACH particle.
8. 2(a)(ii)4 marksFor the element 226/88 Ra, determine the number of EACH of the three particles referred to in (a)(i).
9. 2(a)(iii)2 marksState ONE similarity and ONE difference between the isotopes of an element.
10. 2(b)(i)2 marksDefine the term 'half-life' of a radioactive substance.
11. 2(b)(ii)4 marksThe element thorium (Th) has a half-life of 24 days and undergoes beta-decay. Calculate the time it would take for 10 grams of thorium to decay to 1.25 grams.
12. 3(a)3 marksDefine the term 'electric field'.
13. 3(b)2 marksDraw the electric field formed between the parallel plates shown in Figure 3.
14. 3(c)(i)1 markState ONE other hazard of static charge.
15. 3(c)(ii)1 markState ONE useful application of static charge.
16. 3(d)(i)2 marksvalue of the peak to peak voltage
17. 3(d)(ii)2 marksperiod of the alternating voltage, in seconds
18. 3(d)(iii)4 marksfrequency of the alternating voltage from the supply.
19. 4(a)(i)5 marksDefine each of the following terms: Specific heat capacity; Heat capacity.
20. 4(a)(ii)1 markWrite the formula to show the relationship between the specific heat capacity, c, and heat capacity, C, of a body.
21. 4(b)9 marksUsing the data on page 14, calculate the specific heat capacity of the metal, stating any assumption(s) made.
22. 5(a)(i)3 marksState Hooke's law.
23. 5(a)(ii)3 marksWith the aid of a labelled, sketched graph, explain what is meant by 'elastic limit'.
24. 5(b)5 marksCalculate the weight of an object which when attached to the unloaded spring produces an extension of 50 mm. The elastic limit is NOT exceeded.
25. 5(c)4 marksCalculate the velocity of the object on hitting the ground.
26. 6(a)(i)4 marksState the name of the parts labelled A, B, C and D in Figure 6.
27. 6(a)(ii)1 markIdentify the type of transformer shown in Figure 6.
28. 6(a)(iii)1 markState the formula that relates voltage, V, to number of turns, n, in a transformer.
29. 6(b)(i)4 marksCalculate the input power of the transformer.
30. 6(b)(ii)2 marksthe voltage across the secondary coil
31. 6(b)(iii)3 marksthe maximum secondary current if the transformer is 100% efficient.