Physics Paper 21
Oct / Nov 2017·5054·11 questions
Mock exam: 75 min, official timing
Question paper
Question 1
Question 2
Question 3
Question 4
Question 5
Question 6
Question 7
Question 8
Question 9
Question 10
Question 11
Mark scheme
Question 1
1(a)[2]
1(b)(i)[1]
1(b)(ii)[2]
1(c)[1]
Question 2
2(a)(i)[1]
2(a)(ii)[3]
2(b)[2]
Question 3
3(a)[2]
3(b)(i)[2]
3(b)(ii)[2]
Question 4
4(a)[3]
4(b)[2]
Question 5
5(a)[2]
5(b)[3]
Question 6
6(either)(a)[2]
(high) positive potential very low gas pressure or heat filament continuously / filament must remain hot
6(either)(b)[2]
determine distance / number of squares between pulses multiply by time-base setting or multiply by number of ms / div
6(or)(a)[1]
[Diagram in the mark scheme] the NAND gate symbol: an AND-gate shape (flat input side, rounded output side) with a small circle at the output
6(or)(b)(i)[1]
(the NAND gate has a) power supply / battery or it is an active device
6(or)(b)(ii)[2]
inputs output 0 0 1 0 1 1 1 0 1 inputs output 1 1 0
Question 7
7(a)[2]
7(b)[2]
7(c)[1]
Question 8
8(a)(i)[1]
8(a)(ii)[2]
8(a)(iii)[1]
8(b)(i)[3]
8(b)(ii)[1]
Question 9
9(a)(i)[2]
9(a)(ii)[2]
9(b)(i)[2]
9(b)(ii)[6]
9(c)(i)[1]
9(c)(ii)[2]
Question 10
10(a)(i)
P – gamma(-rays) or γ(-rays). (Marked with (ii) and (iii) together: any one correct scores 1, all three correct score 2.)
10(a)(ii)
Q – ultraviolet (radiation). (Marked with (i) and (iii) together: any one correct scores 1, all three correct score 2.)
10(a)(iii)[2]
R – microwaves. (Marked with (i) and (ii) together: any one correct scores 1, all three correct score 2.)
10(b)[1]
10(c)(i)[3]
10(c)(ii)[2]
10(d)(i)[1]
10(d)(ii)[2]
10(d)(iii)[2]
10(d)(iv)[2]
Question 11
11(a)(i)[1]
11(a)(ii)[2]
11(a)(iii)[4]
11(b)(i)[3]
11(b)(ii)[2]
11(b)(iii)[1]
11(b)(iv)[1]
11(b)(v)[1]