Physics Paper 21
May / June 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)[1]
1(b)(i)[1]
1(b)(ii)[1]
1(b)(iii)[2]
1(c)[2]
Question 2
2(a)[2]
2(b)[2]
Question 3
3(a)[3]
3(b)[1]
3(c)(i)[1]
white and shiny
3(c)(ii)[1]
less radiation emitted / less emission
Question 4
4(a)(i)[1]
4(a)(ii)[1]
4(b)(i)[1]
4(b)(ii)[1]
4(b)(iii)[3]
Question 5
5(a)[3]
5(b)[2]
Question 6
6(a)(i)[1]
6(a)(ii)[2]
6(a)(iii)[2]
6(b)[2]
Question 7
7(a)(i)[1]
7(a)(ii)[1]
7(a)(iii)[1]
7(b)(i)[2]
7(b)(ii)[1]
Question 8
8(a)[1]
8(b)[2]
8(c)[2]
Question 9
9(a)(i)[1]
9(a)(ii)[3]
9(a)(iii)[1]
9(a)(iv)[1]
9(b)(i)[1]
9(b)(ii)[1]
9(b)(iii)[5]
9(b)(iv)[2]
Question 10
10(a)(i)[2]
10(a)(ii)[1]
10(b)(i)[2]
10(b)(ii)[3]
1 correct angle to surface ± 7° with correct orientation and similar wavelength (by eye) 2 at least two lines at smaller angle to surface with correct orientation in slower medium showing smaller and constant wavelength with wavefronts deviated in correct direction
10(c)(i)[2]
10(c)(ii)[2]
1 a range with 15–25 Hz as the lowest frequency and 15–30 kHz as the highest 2 1.6 cm (if highest frequency is 20 000 Hz)
10(c)(iii)[3]
Question 11
11(a)[3]
11(b)(i)[5]
1 0.05 (A) seen (V = ) IR or 0.05 × 240 12 V 2 (R = ) V / I or 0.12 (A) seen 100 Ω
11(b)(ii)[2]
11(c)(i)[3]
11(c)(ii)[2]